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

I solved this problem in Eclipse by going to Windows --> Preferences Java --> Compiler in the right side window choose Compiler compliance level to 1.6, click Apply and Ok.

And Clean Build all projects that should solve the problem