Using the DNS Techpack for all my Mods.
Never had this problem before, seems to randomly crash with these errors.
I have noticed two things;
firstly everyone who crashes on the server crashes at the same time with this error
secondly the people who are crashing seem to be PC users; 4 people on the server, 3 of them are PC users and one of them uses a MAC. The three PC user crash with this error and the mac user has yet to crash.