If running your app from the eclipseme emulator shows the following console output
Running with storage root DefaultColorPhone
Warning: Failed to initialize WMA message routing support
Error: Can't remove a lock file: /opt/sun-j2me-bin-2.2/wtklib/comcon-server.port.lock
Warning: Failed to initialize Bluetooth (JSR 82) support
...
Warning: The attempt to finalize unexisting client.
java.lang.NullPointerException
at com.sun.kvem.midp.MIDP.run(Unknown Source)
at com.sun.kvem.environment.EmulatorInvoker.runEmulatorImpl(Unknown Source)
at com.sun.kvem.environment.EmulatorInvoker.runEmulatorSameVM(Unknown Source)
at com.sun.kvem.environment.EmulatorInvoker.runEmulator(Unknown Source)
at com.sun.kvem.environment.ProfileEnvironment$KVMThread.runEmulator(Unknown Source)
at com.sun.kvem.environment.ProfileEnvironment$KVMThread.run(Unknown Source)
give write permission to the wtklib folder inside the WTK:
$ sudo chmod o+w /opt/sun-j2me-bin-2.2/wtklib
The following disease
...
javax.microedition.rms.RecordStoreException: error opening record store file
at javax.microedition.rms.RecordStore.(+428)
at javax.microedition.rms.RecordStore.openRecordStore(+109)
at name.mro.billard.Stats.findPlayers(+6)
at name.mro.billard.Stats.startApp(+4)
at javax.microedition.midlet.MIDletProxy.startApp(+7)
at com.sun.midp.midlet.Scheduler.schedule(+270)
at com.sun.midp.main.Main.runLocalClass(+28)
at com.sun.midp.main.Main.main(+116)
startApp threw an Exception
...
is cured by
$ sudo chmod o+w -R /opt/sun-j2me-bin-2.2/appdb
A Sun Forum Post provided the correct hint.