my open lan server freezed. i looked at fml log and it seems like recurrent complex causes. and deleted this mod, issue solved. here is the latest fml log
fml-client.txt
using game 1.11.2 forge 2223 latest recurrent complex and ivtoolkit.

I can't see a crash in there. It's entirely possible that the server is still generating a bigger structure at the moment (some rare ones can span multiple chunks and cause chain generating, resulting in a lag spike). I'd recommend waiting 5 minutes at before assuming a total freeze.
I'm closing this issue for now - if you can find a log with an actual error at the end (because I'm 99% there are no actual infinite loops in my code) please reopen the issue.

Hello.
Here it is the my latest log file. Please look at to the end.

latest.txt

But what happened? I go somewhere in my server. And same thing happened. I remembered you, then started to wait. Waited 2 mins, not touching to the game. And i go eat, drink water, etc.... did many thing; and i came back to the computer, approximately waited 25 mins, but it still as it is! then opened taskmgr and closed minecraft, because it was freezed. PLEASE help, i don't want to delete your mod, it is a good mod...
And, my fml-log file is 30 megabytes. If you want to see it, i can make .rar it and upload somewhere. And i also have a crash report now.
crash-2017-01-22_10.36.12-server.txt
And, if this problem is not fault of your mod, then i'm so sorry, but please tell it to me. I can delete another mod but your mod. Thanks a lot.