With Railcraft 8.0.2.0.
Client crush when open Steam Boiler GUI and attached buildcraft pipe with Creosote Oil.

---- Minecraft Crash Report ----
// You should try our sister game, Minceraft!

Time: 9/8/13 10:44 PM
Description: Rendering screen

java.lang.NullPointerException
at mods.railcraft.common.fluids.tanks.StandardTank.refreshTooltip(StandardTank.java:78)
at mods.railcraft.common.fluids.tanks.StandardTank$1.refresh(StandardTank.java:89)
at mods.railcraft.client.gui.GuiContainerRailcraft.func_73863_a(GuiContainerRailcraft.java:60)
at net.minecraft.client.renderer.EntityRenderer.func_78480_b(EntityRenderer.java:1036)
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:944)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:836)
at net.minecraft.client.main.Main.main(SourceFile:101)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:57)
at net.minecraft.launchwrapper.Launch.main(Launch.java:18)

A detailed walkthrough of the error, its code path and all known details is as follows:

-- Head --
Stacktrace:
at mods.railcraft.common.fluids.tanks.StandardTank.refreshTooltip(StandardTank.java:78)
at mods.railcraft.common.fluids.tanks.StandardTank$1.refresh(StandardTank.java:89)
at mods.railcraft.client.gui.GuiContainerRailcraft.func_73863_a(GuiContainerRailcraft.java:60)

-- Screen render details --
Details:
Screen name: mods.railcraft.client.gui.GuiBoilerLiquid
Mouse location: Scaled: (225, 116). Absolute: (676, 434)
Screen size: Scaled: (444, 261). Absolute: (1330, 783). Scale factor of 3

-- Affected level --
Details:
Level name: MpServer
All players: 2 total; [EntityClientPlayerMP['gmousss'/1645557, l='MpServer', x=492.95, y=58.62, z=402.41], EntityOtherPlayerMP['Deadchovsky'/1150755, l='MpServer', x=487.50, y=82.00, z=485.47]]
Chunk stats: MultiplayerChunkCache: 431
Level seed: 0
Level generator: ID 00 - default, ver 1. Features enabled: false
Level generator options:
Level spawn location: World: (184,64,248), Chunk: (at 8,4,8 in 11,15; contains blocks 176,0,240 to 191,255,255), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Level time: 30237092 game time, 29716115 day time
Level dimension: 0
Level storage version: 0x00000 - Unknown?
Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
Forced entities: 149 total; [EntityClientPlayerMP['gmousss'/1645557, l='MpServer', x=492.95, y=58.62, z=402.41], EntitySkeleton['Скелет'/1656148, l='MpServer', x=548.50, y=10.00, z=416.91], EntityCreeper['Крипер'/1646784, l='MpServer', x=513.59, y=69.00, z=424.00], EntityCow['Корова'/1395008, l='MpServer', x=541.33, y=63.00, z=386.52], EntityPainting['Картина'/965925, l='MpServer', x=524.00, y=74.50, z=371.94], EntityBat['Летучая мышь'/1652855, l='MpServer', x=516.94, y=21.23, z=374.22], EntityItem['item.item.egg'/1646796, l='MpServer', x=534.72, y=63.13, z=376.44], EntityPainting['Картина'/965926, l='MpServer', x=519.06, y=80.00, z=369.00], EntitySpider['Паук'/1655600, l='MpServer', x=439.94, y=22.00, z=326.13], EntityItem['item.item.egg'/1633014, l='MpServer', x=533.69, y=63.13, z=374.13], EntityOtherPlayerMP['Dmetriy'/1170796, l='MpServer', x=651.00, y=54.00, z=275.91], EntitySlime['Слизень'/1138924, l='MpServer', x=517.69, y=31.08, z=427.69], EntityCreeper['Крипер'/1656186, l='MpServer', x=489.50, y=25.00, z=457.50], EntityBat['Летучая мышь'/1659977, l='MpServer', x=544.50, y=31.85, z=459.75], EntityBat['Летучая мышь'/1658098, l='MpServer', x=533.16, y=49.10, z=480.34], EntityCreeper['Крипер'/1656185, l='MpServer', x=486.50, y=25.00, z=458.50], EntityItem['item.item.egg'/1639302, l='MpServer', x=533.59, y=63.13, z=375.69], EntityItem['item.item.egg'/1648277, l='MpServer', x=535.00, y=63.13, z=375.16], EntityItem['item.item.egg'/1655078, l='MpServer', x=546.03, y=64.13, z=338.63], EntityBat['Летучая мышь'/1658839, l='MpServer', x=503.69, y=45.89, z=338.88], EntityZombie['Зомби'/1657481, l='MpServer', x=435.50, y=20.00, z=473.50], EntityOtherPlayerMP['Dmetriy'/1170796, l='MpServer', x=651.00, y=54.00, z=275.91], EntityCartBasic['entity.Railcraft.railcraft.cart.basic.name'/966202, l='MpServer', x=556.50, y=70.34, z=413.50], EntityChicken['Курица'/966201, l='MpServer', x=553.16, y=60.61, z=376.84], EntityChicken['Курица'/966200, l='MpServer', x=544.22, y=63.00, z=382.78], EntityItem['item.item.egg'/1634824, l='MpServer', x=531.88, y=63.13, z=375.75], EntitySkeleton['Скелет'/1653845, l='MpServer', x=454.50, y=9.00, z=459.50], EntityCreeper['Крипер'/1660450, l='MpServer', x=469.50, y=36.00, z=464.50], EntityPainting['Картина'/966149, l='MpServer', x=544.94, y=69.50, z=352.50], EntitySkeleton['Скелет'/1658279, l='MpServer', x=541.50, y=16.00, z=418.50], EntityPainting['Картина'/965925, l='MpServer', x=524.00, y=74.50, z=371.94], EntityPainting['Картина'/965926, l='MpServer', x=519.06, y=80.00, z=369.00], EntityZombie['Зомби'/1658945, l='MpServer', x=504.50, y=34.00, z=354.50], EntityOtherPlayerMP['Dmetriy'/1170796, l='MpServer', x=651.00, y=54.00, z=275.91], EntityZombie['Зомби'/965921, l='MpServer', x=500.06, y=50.00, z=335.44], EntitySkeleton['Скелет'/1658034, l='MpServer', x=471.50, y=36.00, z=467.50], EntityCow['Корова'/1395003, l='MpServer', x=543.32, y=63.00, z=383.07], EntityOtherPlayerMP['Dmetriy'/1170796, l='MpServer', x=651.00, y=54.00, z=275.91], EntityPainting['Картина'/966147, l='MpServer', x=544.94, y=69.50, z=347.50], EntityChicken['Курица'/966148, l='MpServer', x=546.53, y=68.00, z=343.19], EntityPainting['Картина'/966147, l='MpServer', x=544.94, y=69.50, z=347.50], EntityPainting['Картина'/966149, l='MpServer', x=544.94, y=69.50, z=352.50], EntityCow['Корова'/1395005, l='MpServer', x=540.07, y=63.00, z=384.02], EntityPig['Свинья'/966083, l='MpServer', x=531.50, y=68.00, z=350.88], EntityItemFrame['entity.ItemFrame.name'/966082, l='MpServer', x=533.06, y=65.50, z=348.50], EntityItemFrame['entity.ItemFrame.name'/966081, l='MpServer', x=533.06, y=65.50, z=350.50], EntityChicken['Курица'/966087, l='MpServer', x=533.22, y=63.00, z=375.78], EntityChicken['Курица'/966086, l='MpServer', x=530.44, y=63.00, z=374.56], EntityChicken['Курица'/966085, l='MpServer', x=539.78, y=63.00, z=382.78], EntityBat['Летучая мышь'/1656824, l='MpServer', x=466.63, y=37.10, z=353.31], EntityItemFrame['entity.ItemFrame.name'/966084, l='MpServer', x=533.06, y=65.50, z=352.50], EntityChicken['Курица'/966091, l='MpServer', x=532.66, y=63.00, z=374.34], EntityItem['item.item.arrow'/1648445, l='MpServer', x=473.22, y=72.13, z=459.81], EntityOtherPlayerMP['Deadchovsky'/1150755, l='MpServer', x=487.50, y=82.00, z=485.47], EntityChicken['Курица'/966090, l='MpServer', x=535.22, y=63.00, z=375.69], EntityChicken['Курица'/966089, l='MpServer', x=535.22, y=63.00, z=376.25], EntityChicken['Курица'/966088, l='MpServer', x=534.72, y=63.00, z=375.16], EntityChicken['Курица'/966095, l='MpServer', x=533.97, y=63.00, z=376.75], EntityChicken['Курица'/966094, l='MpServer', x=534.19, y=63.00, z=375.25], EntityChicken['Курица'/966093, l='MpServer', x=534.69, y=63.00, z=376.28], EntityChicken['Курица'/966092, l='MpServer', x=531.59, y=63.00, z=374.72], EntityChicken['Курица'/966098, l='MpServer', x=533.25, y=63.00, z=374.78], EntityChicken['Курица'/966099, l='MpServer', x=531.06, y=63.00, z=374.16], EntityChicken['Курица'/966096, l='MpServer', x=535.22, y=63.00, z=375.16], EntityItem['item.item.egg'/1658195, l='MpServer', x=530.22, y=63.13, z=375.75], EntityItem['item.item.egg'/1655175, l='MpServer', x=541.38, y=63.13, z=382.91], EntityChicken['Курица'/966097, l='MpServer', x=533.41, y=63.00, z=376.47], EntityOtherPlayerMP['Dmetriy'/1170796, l='MpServer', x=651.00, y=54.00, z=275.91], EntityChicken['Курица'/966102, l='MpServer', x=533.19, y=63.00, z=374.16], EntityChicken['Курица'/966103, l='MpServer', x=533.78, y=63.00, z=374.66], EntityChicken['Курица'/966100, l='MpServer', x=534.72, y=63.00, z=375.75], EntityBat['Летучая мышь'/1656840, l='MpServer', x=520.94, y=32.12, z=482.13], EntityChicken['Курица'/966101, l='MpServer', x=531.81, y=63.00, z=375.47], EntityChicken['Курица'/966106, l='MpServer', x=533.84, y=63.00, z=374.16], EntityCow['Корова'/966107, l='MpServer', x=541.06, y=63.00, z=387.54], EntityChicken['Курица'/966104, l='MpServer', x=533.84, y=63.00, z=375.91], EntityChicken['Курица'/966105, l='MpServer', x=535.22, y=63.00, z=376.84], EntityChicken['Курица'/966110, l='MpServer', x=532.09, y=63.00, z=374.16], EntitySlime['Слизень'/1652491, l='MpServer', x=528.69, y=22.00, z=408.88], EntityCow['Корова'/966108, l='MpServer', x=541.09, y=63.00, z=384.16], EntityCow['Корова'/966109, l='MpServer', x=542.56, y=63.00, z=386.35], EntityCow['Корова'/966113, l='MpServer', x=541.58, y=63.00, z=388.80], EntityChicken['Курица'/966112, l='MpServer', x=539.78, y=63.00, z=391.22], EntityZombie['Зомби'/1657611, l='MpServer', x=448.50, y=23.00, z=345.50], EntityCow['Корова'/966115, l='MpServer', x=543.93, y=63.00, z=385.04], EntityCow['Корова'/966114, l='MpServer', x=543.91, y=63.00, z=387.63], EntityCow['Корова'/966117, l='MpServer', x=542.83, y=63.00, z=388.70], EntityCow['Корова'/966116, l='MpServer', x=541.44, y=63.00, z=390.93], EntitySlime['Слизень'/1491990, l='MpServer', x=427.31, y=18.00, z=414.66], EntityCow['Корова'/966119, l='MpServer', x=542.58, y=63.00, z=386.36], EntityCow['Корова'/966118, l='MpServer', x=540.10, y=63.00, z=383.09], EntityCow['Корова'/966121, l='MpServer', x=540.09, y=63.00, z=387.61], EntityCow['Корова'/1395175, l='MpServer', x=541.34, y=63.00, z=385.44], EntityCow['Корова'/966120, l='MpServer', x=540.09, y=63.00, z=387.62], EntityCow['Корова'/966123, l='MpServer', x=540.09, y=63.00, z=390.05], EntityCow['Корова'/966122, l='MpServer', x=540.49, y=63.00, z=390.91], EntityCow['Корова'/966125, l='MpServer', x=543.93, y=63.00, z=390.93], EntityCow['Корова'/1394928, l='MpServer', x=542.57, y=63.00, z=384.42], EntityItem['item.item.egg'/1556059, l='MpServer', x=530.19, y=63.13, z=374.72], EntityCow['Корова'/966124, l='MpServer', x=543.93, y=63.00, z=386.20], EntityCow['Корова'/966127, l='MpServer', x=543.91, y=63.00, z=389.77], EntityCow['Корова'/1394930, l='MpServer', x=542.88, y=63.00, z=390.93], EntityCow['Корова'/966126, l='MpServer', x=541.60, y=63.00, z=387.73], EntityCow['Корова'/966128, l='MpServer', x=542.47, y=63.00, z=385.31], EntityCow['Корова'/966129, l='MpServer', x=542.79, y=63.00, z=384.26], EntityCow['Корова'/966130, l='MpServer', x=541.23, y=63.00, z=388.74], EntityCow['Корова'/966131, l='MpServer', x=542.80, y=63.00, z=389.83], EntityCow['Корова'/966132, l='MpServer', x=540.09, y=63.00, z=388.75], EntityCow['Корова'/966133, l='MpServer', x=540.07, y=63.00, z=386.54], EntityItem['item.item.arrow'/1648385, l='MpServer', x=445.66, y=70.13, z=456.19], EntityCow['Корова'/966134, l='MpServer', x=543.93, y=63.00, z=386.41], EntityCow['Корова'/966135, l='MpServer', x=540.09, y=63.00, z=388.86], EntityCow['Корова'/966136, l='MpServer', x=543.93, y=63.00, z=386.18], EntityCow['Корова'/966137, l='MpServer', x=542.58, y=63.00, z=387.71], EntityCartBasic['entity.Railcraft.railcraft.cart.basic.name'/966138, l='MpServer', x=531.50, y=63.50, z=394.50], EntityCow['Корова'/966139, l='MpServer', x=543.91, y=63.00, z=387.65], EntityCow['Корова'/966140, l='MpServer', x=541.17, y=63.00, z=384.21], EntityHorse['Лошадь'/966141, l='MpServer', x=531.66, y=63.00, z=414.28], EntityHorse['Лошадь'/966142, l='MpServer', x=529.97, y=63.00, z=414.75], EntityOtherPlayerMP['Deadchovsky'/1150755, l='MpServer', x=487.50, y=82.00, z=485.47], EntityBat['Летучая мышь'/1658424, l='MpServer', x=444.78, y=15.98, z=335.13], EntityCow['Корова'/1395620, l='MpServer', x=540.96, y=63.00, z=383.07], EntityCow['Корова'/1395376, l='MpServer', x=540.09, y=63.00, z=385.28], EntityBat['Летучая мышь'/1660337, l='MpServer', x=533.25, y=55.00, z=469.75], EntityCow['Корова'/1395616, l='MpServer', x=543.91, y=63.00, z=384.11], EntityZombie['Зомби'/1651229, l='MpServer', x=493.34, y=36.00, z=429.13], EntityCow['Корова'/1395097, l='MpServer', x=540.09, y=63.00, z=386.44], EntityItem['item.item.egg'/1659123, l='MpServer', x=542.00, y=63.13, z=391.19], EntitySpider['Паук'/1648771, l='MpServer', x=525.50, y=41.00, z=377.50], EntityCow['Корова'/1395374, l='MpServer', x=541.51, y=63.00, z=389.93], EntitySpider['Паук'/1660329, l='MpServer', x=456.50, y=43.00, z=324.50], EntitySpider['Паук'/1660328, l='MpServer', x=458.50, y=43.00, z=324.50], EntitySkeleton['Скелет'/1659614, l='MpServer', x=536.13, y=38.00, z=475.53], EntityZombie['Зомби'/965621, l='MpServer', x=514.31, y=37.00, z=408.69], EntityBat['Летучая мышь'/1659130, l='MpServer', x=516.50, y=34.00, z=379.50], EntityBat['Летучая мышь'/1659131, l='MpServer', x=530.00, y=30.89, z=388.09], EntityCreeper['Крипер'/1646268, l='MpServer', x=493.50, y=39.00, z=353.50], EntityZombie['Зомби'/1650395, l='MpServer', x=497.50, y=59.00, z=347.50], EntityBat['Летучая мышь'/1649303, l='MpServer', x=537.72, y=39.64, z=454.50], EntityOtherPlayerMP['Dmetriy'/1170796, l='MpServer', x=651.00, y=54.00, z=275.91], EntityCartBasic['entity.Railcraft.railcraft.cart.basic.name'/1379683, l='MpServer', x=536.50, y=63.50, z=392.50], EntityCreeper['Крипер'/1660310, l='MpServer', x=536.50, y=46.00, z=479.50], EntityItem['item.item.egg'/1647380, l='MpServer', x=532.16, y=63.13, z=374.25], EntitySkeleton['Скелет'/1660311, l='MpServer', x=536.96, y=45.55, z=483.10], EntityCow['Корова'/1396418, l='MpServer', x=543.93, y=63.00, z=384.05], EntityCow['Корова'/1396212, l='MpServer', x=543.91, y=63.00, z=388.65], EntityCow['Корова'/1395614, l='MpServer', x=542.99, y=63.00, z=383.07], EntityChicken['Курица'/966277, l='MpServer', x=562.59, y=73.00, z=332.56], EntityChicken['Курица'/966278, l='MpServer', x=570.66, y=64.00, z=357.88]]
Retry entities: 0 total; []
Server brand: fml,forge
Server type: Non-integrated multiplayer server
Stacktrace:
at net.minecraft.client.multiplayer.WorldClient.func_72914_a(WorldClient.java:440)
at net.minecraft.client.Minecraft.func_71396_d(Minecraft.java:2310)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:854)
at net.minecraft.client.main.Main.main(SourceFile:101)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:57)
at net.minecraft.launchwrapper.Launch.main(Launch.java:18)

-- System Details --
Details:
Minecraft Version: 1.6.2
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.7.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 162214592 bytes (154 MB) / 603848704 bytes (575 MB) up to 954466304 bytes (910 MB)
JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G
AABB Pool Size: 3032 (169792 bytes; 0 MB) allocated, 559 (31304 bytes; 0 MB) used
Suspicious classes: FML and Forge are installed
IntCache: cache: 0, tcache: 0, allocated: 6, tallocated: 62
FML: MCP v8.04 FML v6.2.60.859 Minecraft Forge 9.10.1.859 24 mods loaded, 24 mods active
mcp{8.04} Minecraft Coder Pack Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
FML{6.2.60.859} Forge Mod Loader Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
Forge{9.10.1.859} Minecraft Forge Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
CodeChickenCore{0.9.0.5} CodeChicken Core Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
NotEnoughItems{1.6.1.3} [Not Enough Items](NotEnoughItems 1.6.1.3.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
ArchimedesShipsMod{1.6.2 v1.3.5} Archimedes' Ships Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
BiblioCraft{1.4.0} BiblioCraft Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
BuildCraft|Core{4.0.2} BuildCraft Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
BuildCraft|Builders{4.0.2} BC Builders Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
BuildCraft|Energy{4.0.2} BC Energy Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
BuildCraft|Factory{4.0.2} BC Factory Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
BuildCraft|Transport{4.0.2} BC Transport Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
BuildCraft|Silicon{4.0.2} BC Silicon Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
ChickenChunks{1.3.3.2} [ChickenChunks](ChickenChunks 1.3.3.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
craftguide{1.5.2} CraftGuide Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
IC2{2.0.150-experimental} IndustrialCraft 2 Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
Forestry{2.3.0.1} Forestry for Minecraft Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
Railcraft{8.0.2.0} Railcraft Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
WR-CBE|Core{1.4.0.5} [WR-CBE Core](WR-CBE 1.4.0.5.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
WR-CBE|Addons{1.4.0.5} [WR-CBE Addons](WR-CBE 1.4.0.5.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
ForgeMultipart{1.0.0.151} Forge Multipart Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
WR-CBE|Logic{1.4.0.5} [WR-CBE Logic](WR-CBE 1.4.0.5.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
McMultipart{1.0.0.151} Minecraft Multipart Plugin Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
ForgeMicroblock{1.0.0.151} Forge Microblocks Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
Launched Version: 1.6.2-Forge9.10.1.859
LWJGL: 2.9.0
OpenGL: GeForce GTX 460M/PCIe/SSE2 GL version 4.3.0, NVIDIA Corporation
Is Modded: Definitely; Client brand changed to 'fml,forge'
Type: Client (map_client.txt)
Resource Pack: Default
Current Language: Русский (Россия)
Profiler Position: N/A (disabled)
Vec3 Pool Size: 404 (22624 bytes; 0 MB) allocated, 35 (1960 bytes; 0 MB) used

It's crash when move cursor to fuel indicator.

Closed by mistake, sorry.