---- Minecraft Crash Report ----
// This is a token for 1 free hug. Redeem at your nearest Mojangsta: [HUG]

Time: 05.06.17 0:43
Description: Exception in server tick loop

java.lang.NullPointerException: Exception in server tick loop
at net.minecraft.server.MinecraftServer.func_71266_T(MinecraftServer.java:1399)
at de.katzenpapst.amunra.proxy.ServerProxy.preInit(ServerProxy.java:14)
at de.katzenpapst.amunra.AmunRa.preInit(AmunRa.java:200)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at cpw.mods.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:532)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
at com.google.common.eventbus.EventBus.post(EventBus.java:275)
at cpw.mods.fml.common.LoadController.sendEventToModContainer(LoadController.java:212)
at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:190)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)
at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
at com.google.common.eventbus.EventBus.post(EventBus.java:275)
at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:119)
at cpw.mods.fml.common.Loader.preinitializeMods(Loader.java:556)
at cpw.mods.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:88)
at cpw.mods.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:320)
at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:176)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:643)
at java.lang.Thread.run(Unknown Source)

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

-- System Details --
Details:
Minecraft Version: 1.7.10
Thermos Version: cyberdynecc:Thermos:1.7.10-1614.58
Plugins: ERROR NullPointerException: null
Disabled Plugins: ERROR NullPointerException: null
Operating System: Windows 10 (amd64) version 10.0
Java Version: 1.8.0_131, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 3963617296 bytes (3780 MB) / 4294967296 bytes (4096 MB) up to 6442450944 bytes (6144 MB)
JVM Flags: 11 total; -XX:+UseG1GC -XX:+UseFastAccessorMethods -XX:+OptimizeStringConcat -XX:MetaspaceSize=1024m -XX:MaxMetaspaceSize=2048m -XX:+AggressiveOpts -XX:MaxGCPauseMillis=10 -XX:+UseStringDeduplication -Xms4G -Xmx6G -XX:hashCode=5
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
FML: MCP v9.05 FML v7.10.99.99 Minecraft Forge 10.13.4.1614 8 mods loaded, 8 mods active
States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
UCH mcp{9.05} [Minecraft Coder Pack] (minecraft.jar)
UCH FML{7.10.99.99} [Forge Mod Loader] (Thermos-1.7.10-1614-58-server.jar)
UCH Forge{10.13.4.1614} [Minecraft Forge] (Thermos-1.7.10-1614-58-server.jar)
UCH kimagine{0.2} [KImagine] (minecraft.jar)
UCH Micdoodlecore{} [Micdoodle8 Core] (minecraft.jar)
UCH GalacticraftCore{3.0.12} [Galacticraft Core] (GalacticraftCore-1.7-3.0.12.499.jar)
UCH GalacticraftMars{3.0.12} [Galacticraft Planets] (Galacticraft-Planets-1.7-3.0.12.499.jar)
UCE GalacticraftAmunRa{0.4.7} [Pra's Galacticraft Mod] (AmunRa-GC-0.4.7.jar)
Profiler Position: N/A (disabled)
Is Modded: Definitely; Server brand changed to 'thermos,cauldron,craftbukkit,mcpc,kcauldron,fml,forge'
Type: Dedicated Server (map_server.txt)

oO
seems like it breaks for you in MinecraftServer.isServerInOnlineMode. How did you do that?

Just start it on Thermos-1.7.10-1614-58 on default settings. KCauldron and cauldron has same crash.
Forge server works correctly.

So Thermos and KCauldron are alternative implementations of the forge server?
Mh. I guess I can try figuring out if my mod is running on forge or not, and if not, just don't do that check where it crashes for you. It's not that important anyway, it's just to automatically disable the usage of UUIDs if running on a "cracked" server because UUIDs aren't reliable there.

GC-495 and AmunRa 0.4.5 works fine.