https://yadi.sk/d/wyIv9nzUrFChm
Source: http://minecraft.curseforge.com/projects/cyclops-core?comment=5

Probably related: I had a crash when picking up lava.
I'm using CyclopsCore-1.9-0.5.6.jar on Forge 1.9-12.16.0.1865.

Here's the log and crash report:
crash-2016-04-26_05.36.54-client.txt
fml-client-latest.log.txt
latest.log.txt

Thanks @LlubNek! These logs will definitely help :)