Can't run program?

[cdromeoandjoule]

Hiiii

I'm running some programs in Java on Netbeans to control the electronics board, and everything was going well until I tried to switch the main program and then switch back. I also accidentally clicked "Clean and Build", then I exited in the middle of it because I meant to click "Run as main program"

The error message I got says:

[cRIO] GCs: 1 full, 0 partial
[cRIO] ** VM stopped: exit code = 1 **
[cRIO] task 0xcea978 (SquawkRobotTask) deleted: errno=0 (0) status=1 (0x1)

And I was wondering how I could fix it so it could run again?
Thanks!!