it's nearly the same with my installation under SuSe Linux 8:
"This Application has Unexpectedly Quit"

and a java.lang.NoClassDefFoundError: javax/swing/JDialog

at
at RunLime.showInternalError(Unknown Source)
at RunLime.main(Unknown Source)
at com.zerog.lax.LAX.launch(Unknown Source)
at com.zerog.lax.LAX.main(Unknown Source)

bye,
bascht <mail@bascht.com>