I suspect this is to do with TR's 2.0 update but I'll let you be the judge of that. Oddly enough, no server crash.

Crash here: http://pastebin.com/FvrRT9dj

Running TR 2.0.0.80, RC 2.8.0.59 and QS 3.2.7 with FML 2109.

yup the class was moved in RebornCore this will be fixed in the next build

We are not ready to push the update, might be able to make QS work on both versions some how

Yeah I will put a copy of Slotfluid into QS for now