failed to get registry access this is a bug

[Dakota_Playz]

Hi I am playing modded survival with my friend, I had to redownload the mods and now I try to connect to his world through hamachi getting this error message after logging in: failed to get registry access this is a bug, what could be causing this issue?

[PhantasmBlast]

Same, i've spent 5 hours trying to figure it out but cant understand shit all 

[Powerful845tiger]

share your client log

[Isbjoern]

Are you using the Moonlight lib mod? When I updated this morning I got the same error. Reverting to earlier version solved the problem for me.

[PNTX]

just so you know, you are not alone. we have the same issue here on github: https://github.com/FTBTeam/FTB-Modpack-Issues/issues/2768