[SOLVED] Building works, but apps crash instantly

[Edit] Solved by my own humble self. Seems I fumbled around with Java Compiler Compliance Level too much, ofAndroidLib was probably still built with 1.5. Cleaned just about everything, set Compiler Compliance to 1.6 everywhere, rebuilt. androidPolygonExample works now. I’m sooo happy. ^___^
[/Edit]

Okay, I’m finally able to build example apps. But after my compiled apps get installed on my phone (Nexus 4 with 4.3.1) they crash instantly. Tried with androidEmptyExample and androidPolygonExample.
Here’s the logcat output:

09-27 13:40:06.924: I/System.out(19021): waiting for debugger to settle...
09-27 13:40:07.124: I/System.out(19021): waiting for debugger to settle...
09-27 13:40:07.325: I/System.out(19021): waiting for debugger to settle...
09-27 13:40:07.525: I/System.out(19021): debugger has settled (1441)
09-27 13:40:07.555: I/OF(19021): static init
09-27 13:40:07.555: D/dalvikvm(19021): Trying to load lib /data/app-lib/cc.openframeworks.androidEmptyExample-2/libneondetection.so 0x418594d0
09-27 13:40:07.555: D/dalvikvm(19021): Added shared lib /data/app-lib/cc.openframeworks.androidEmptyExample-2/libneondetection.so 0x418594d0
09-27 13:40:07.555: D/dalvikvm(19021): No JNI_OnLoad found in /data/app-lib/cc.openframeworks.androidEmptyExample-2/libneondetection.so 0x418594d0, skipping init
09-27 13:40:07.565: I/OF(19021): loading neon optimized library
09-27 13:40:07.565: D/dalvikvm(19021): Trying to load lib /data/app-lib/cc.openframeworks.androidEmptyExample-2/libOFAndroidApp_neon.so 0x418594d0
09-27 13:40:07.615: D/dalvikvm(19021): Added shared lib /data/app-lib/cc.openframeworks.androidEmptyExample-2/libOFAndroidApp_neon.so 0x418594d0
09-27 13:40:07.615: I/(19021): JNI_OnLoad called
09-27 13:40:07.615: I/OF(19021): initializing app
09-27 13:40:07.615: I/OF(19021): OFAndroid init...
09-27 13:40:07.615: W/dalvikvm(19021): threadid=12: thread exiting with uncaught exception (group=0x415cf7c0)
09-27 13:40:07.625: E/AndroidRuntime(19021): FATAL EXCEPTION: Thread-2419
09-27 13:40:07.625: E/AndroidRuntime(19021): java.lang.Error: Unresolved compilation problem: 
09-27 13:40:07.625: E/AndroidRuntime(19021):     The method run() of type new Runnable(){} must override a superclass method
09-27 13:40:07.625: E/AndroidRuntime(19021):     at cc.openframeworks.OFAndroid$1.run(OFAndroid.java:154)
09-27 13:40:07.625: E/AndroidRuntime(19021):     at java.lang.Thread.run(Thread.java:841)
09-27 13:40:07.635: W/dalvikvm(19021): threadid=13: thread exiting with uncaught exception (group=0x415cf7c0)
09-27 13:40:07.635: I/Process(19021): Sending signal. PID: 19021 SIG: 9
09-27 13:40:07.645: I/ActivityManager(591): Process cc.openframeworks.androidEmptyExample (pid 19021) has died.

Can anyone tell me whats happening?
I guess the problem lies here: The method run() of type new Runnable(){} must override a superclass method but I don’t have a clue what that means and what to do.

My System:
Win8.1
android-ndk-r9b
adt-bundle-windows-x86-20140702
(switched just about everything to its 32bit-version)