My friend and I recently modified the Karma mod pack for ATL with some mods that we wanted to play together on a server with. After ensuring that none of the mods caused client or server crashes, we booted up the instance from the launcher and began to play. However, I was unable to play with him. Every time I attempted to join the server, I would either crash immediately or within a few minutes. The ATL console only offered 3 messages in the log related to this:
[06/3/2015 16:50:11 PM] process has not exited
[06/3/2015 16:50:11 PM] java.lang.ProcessImpl.exitValue(Unknown Source)
[06/3/2015 16:50:11 PM] com.atlauncher.data.Instance$2.run(Instance.java:1150)
This happened rather frequently. He has not crashed, nor has the server "blown up" in the few hours he has been playing while I attempt to troubleshoot. After playing in single player, I have confirmed that it is not trying to play with the pack that is causing issues, but trying to connect to a server with it. Any suggestions/help?
[06/3/2015 16:50:11 PM] java.lang.ProcessImpl.exitValue(Unknown Source)
[06/3/2015 16:50:11 PM] com.atlauncher.data.Instance$2.run(Instance.java:1150)
Crashlog (Pastebin.com)