#28 After detaching debug, debug attaching doesn't work

[Sami Koivu]

1) Launch a JVM to be debugged
2) Detach from the JVM
3) Close the other JVM that was being debugged
4) Try to launch a new JVM to be debugged

Expected result:
The JVM is launched and reJ will be attached to it

Actual result:
The JVM is launched, but the reJ GUI remains in detached mode.