I've had next to no problems, except for a bug that seemingly occurs only while wearing the couples mask I've checked this 4 times, only crashing around 5 seconds after putting on the mask.

Might be related to other mods I use, but here is the crash report. From what I can understand it appears to be a render issue. I'll continue playing around with the mods I have to see if they are the problem, but I'm sure it's ZSS that causes it.

-- System Details --
Details:
Minecraft Version: 1.8
Operating System: Windows 8.1 (amd64) version 6.3
Java Version: 1.8.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 194042440 bytes (185 MB) / 593149952 bytes (565 MB) up to 1060372480 bytes (1011 MB)
JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
FML: MCP v9.10 FML v8.0.99.99 Minecraft Forge 11.14.3.1502 10 mods loaded, 10 mods active
States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
UCHIJAAAA mcp{9.05} Minecraft Coder Pack
UCHIJAAAA FML{8.0.99.99} Forge Mod Loader
UCHIJAAAA Forge{11.14.3.1502} Minecraft Forge
UCHIJAAAA PlayerAPI{1.1} Player API
UCHIJAAAA SmartCore{1.1} Smart Core
UCHIJAAAA zeldaswordskills{1.8-3.0.3b} Zelda Sword Skills
UCHIJAAAA antiqueatlas{4.2.7-1.8} Antique Atlas
UCHIJAAAA Backpack{2.0.1} Backpack
UCHIJAAAA SmartMoving{16.0.1} Smart Moving
UCHIJAAAA SmartRender{2.1} Smart Render
Loaded coremods (and transformers):
SmartCorePlugin (SmartCore-1.8-1.1.jar)
net.smart.core.SmartCoreTransformer
PlayerAPIPlugin (PlayerAPI-1.8-1.1.jar)
api.player.forge.PlayerAPITransformer
GL info: ' Vendor: 'Intel' Version: '4.0.0 - Build 10.18.10.3345' Renderer: 'Intel(R) HD Graphics 4000'
Launched Version: 1.8-Forge11.14.3.1502
LWJGL: 2.9.1
OpenGL: Intel(R) HD Graphics 4000 GL version 4.0.0 - Build 10.18.10.3345, Intel
GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Shaders are available because OpenGL 2.1 is supported.
VBOs are available because OpenGL 1.5 is supported.

Using VBOs: No
Is Modded: Definitely; Client brand changed to 'fml,forge'
Type: Client (map_client.txt)
Resource Packs: []
Current Language: English (US)
Profiler Position: N/A (disabled)

Hm, it's hard to say for sure without the complete stack trace - you left out all the important parts :\

There was an issue in 1.8 when wearing the Couple's Mask around villagers: the server would crash with a NullPointerException while fetching the Village Collection object.

Are you sure this is not the same issue? If so, it is fixed already for the next release.

@ChristopherTylerGale Can you post the full crash log please?

Closing this due to no further information and being unable to reproduce it.