When i open my inventory in multiplayer server the client crash, same problem to my other friends.
I use the latest version of the mod (1.5-146).

Please give a log, otherwise we cannot diagnose this issue.

I have had the same crash, he's my log: https://gist.github.com/NillerMedDild/dc8f94d924734661abecd766aac6d73e
Edit: With version r1.5-149

I figured my config could be the cause, so here's a paste of it: https://gist.github.com/NillerMedDild/174d538a737e89ab690716755b973e9d

ac4a601

Thank you!