Wating for Debugger to attach - android emulator

I tried to debug my app on the emulator and found following errormessage
after some debugsessions.

Errormessage:
Waiting for Debugger
Application ExtremeCoolApplication (process
biz.seeland.ExtremeCoolApp) is waiting for the debugger to attach.
[Force Close]

Solution:
Set "Wipe Date" once in "Run" -> "Run Configuration..."