com.android.dx.util.DexException: Multiple dex files define

Question

I use ant release and got this error:

   [dx] UNEXPECTED TOP-LEVEL EXCEPTION:
   [dx] com.android.dx.util.DexException: Multiple dex files define Lcom/android/vending/billing/IMarketBillingService;
   [dx]     at com.android.dx.merge.DexMerger.readSortableTypes(DexMerger.java:580)
   [dx]     at com.android.dx.merge.DexMerger.getSortedTypes(DexMerger.java:538)
   [dx]     at com.android.dx.merge.DexMerger.mergeClassDefs(DexMerger.java:519)
   [dx]     at com.android.dx.merge.DexMerger.mergeDexBuffers(DexMerger.java:168)
   [dx]     at com.android.dx.merge.DexMerger.merge(DexMerger.java:186)
   [dx]     at com.android.dx.command.dexer.Main.mergeLibraryDexBuffers(Main.java:300)
   [dx]     at com.android.dx.command.dexer.Main.run(Main.java:232)
   [dx]     at com.android.dx.command.dexer.Main.main(Main.java:174)
   [dx]     at com.android.dx.command.Main.main(Main.java:91)

I have same error, but answers didn't help me

I tried:

• Reinstall android sdk to other dir
• Remove bin/gen dirs and clean project
• Remove and add libs in eclipse
• Change android API from 17 to 10
• Make sure my bin folder is not included in my build path

I have 1 main project and 2 lib projects (Facebook and Expansion files downloader)

Thanks for answers!

Answer 1

Please check if the package includes com/android/vending/billing/IMarketBillingService is reference twice or more in your project settings.