Iv played Spiral knights for a few weeks with this extra.txt file and i had no problems. Today, i had a update, and during the update my PC Crashed.
I emergency rebooted and then my game would not work no more. I followed a suggestion to say "Delete the extra.txt if you have one" and i done so.
After that the game would boot, but reapplying the extra.txt would cause it not to work.
I Reinstualled spiral knights and got a different message which says
"
Java Virtual Machine Launcher
Error: Could not create the Java Virtual Machine.