FTB Infinity Evolved server crashing

[neo_cyrus]

Title:

FTB Infinity Evolved server crashing​

Launcher Version:

FTB 1.4.12​

Modpack:

FTB INFINITY EVOLVED​

Modpack Version:

2.5.0​

Log Link:

http://pastebin.com/xKhEY6yh​

Details of the issue:

5 minutes ago I was on the server running just fine, now I am getting this error when attempting to start the server. In the past I was able to fix it by wiping the server and copying over the world folder, but this is annoying to do. Is there an actual fix for this?​

 

[Moasseman]

Like, the crash seems very similar to the crash that happens when a clientside mod is installed on server, but if you were able to run this 5 minutes ago just fine, it's obviously not that.

Am baffled.

 

[mc.crab]

Caused by: java.lang.RuntimeException: Attempted to load class bjf for invalid side SERVER

Did you chage any of the server files before starting the server? The error is pretty clear, but if it ran just fine before... Im baffled too.

 

[neo_cyrus]

I did work on optifine and getting that added in, I'll try changing that when I'm home again. I've found conflicting reports, does optifine need to be server and client side to work, or just client side?

 

[UniZero]

I did work on optifine and getting that added in, I'll try changing that when I'm home again. I've found conflicting reports, does optifine need to be server and client side to work, or just client side?

Client only for optifine

 

[neo_cyrus]

Thanks, looks like OptiFine was causing the problem, now I have to figure out why optifine doesn't really seem to do anything. I adjusted all the settings to do what I want, but it's not having any effect.