Dx bad class file magic (cafebabe) or version (0033.0000) with ADK14

Question

Since moving to ADK14, I have been unable to build new apks for release on my Windows 7 system.

Building fails with \"conversion to dalvik format failed with error 1

Answer 1

Changing the Eclipse java version to 6 worked for me. In Eclipse, go to Windows->Preferences->Java->Compiler and set "Compiler compliance level" to 1.6.

Strange thing is that I had Eclipse 3.7.0 and it worked fine, while other computers had 3.7.1 and the jar files built there didn't work...