Breymja

After trying out every single mod i found the issue. The causing mod is: Level Up! https://github.com/BeetoGuy/LevelUp2/issues/49 Nothing related to core mods. They also got an crash issue on the server now, it seems.

Well, i'll put a link to this topic on their issue tracker. Maybe they look into it - but i still don't think that's the issue. https://github.com/fewizz/NotEnoughIDs/issues/74 As long as we can use 2655, we're fine. As a big amount of mods out there have coremods, they'll probably be there for a reason. @DaemonUmbra Yeah, but something must have changed, as the bug appears when updating forge 2655 to 2690 / 2703 and rollbacking to 2655 fixes it. Easy as that.

Here is a log with the EXACT same mods and NEID - but on forge 2655 - everything works fine: https://gist.github.com/D3nnis3n/a5a2b22bff4bfc5308d9986948f7a45b Maybe that helps to find the real problem? Otherwise we'll just have to stay on 2655, i guess.

I don't believe that, as rollbacking to Forge 2655 fixes the problem. I can't remove that mod, so it's no option. I also don't believe it causes this. So if the Mod is the problem, something must have changed in a forge version after that. But anyway, i can't test if it is NEID, as we got too many IDs used.

I removed the ones you mentioned above. I now also removed MRTJPCore and Optifine, therefore only NEID is left, which i can't remove as i showed before. Here is the updated log: https://gist.github.com/D3nnis3n/5877c80bb62403f9072b0da02b0d6d13

I removed all CoreMods despite NotEnoughIDs and the issue persists: https://gist.github.com/D3nnis3n/e3480396cd3e294e704be79ae31c6114 I'm very sure NotEnoughIDs is not the reason. We use it for a year on our live-server and never had problems before. Even if it would be the reason, we can't remove it as, despite for this test we removed loads of mods, this happens after it's removed and therefore no further testing is possible: Any other ideas? //EDIT: I forgot AdChimneys and ForgeEndertech. Removed those two, also. Same faulty result.

Alright, i'll try them through.

I dot have any problem until now. Removing NotEnoughIDs is not possible - we're using more IDs than available without it. So i need to downgrade my forge?

I got one of those problems, that seem to be happening more often in the last time (the latest topics are all about this error) after upgrading to 1690, then 2703 from 2655 and can't join my server anymore. Server and Client mods are identical, as are the config files - i quadruple checked this. When something was wrong there earlier i got "fatally missing registry entries". I'm a bit off what's wrong. Latest.log is here: https://gist.github.com/D3nnis3n/81678b202af6dc5e7d5169792e32773f Error Message is the same as in the other thread: https://gyazo.com/fb779f21c12c45619038cf413e712184 Would appreciate any help what's the cause of it, no mod is named.