Why This Error Is Coming I Have Not Even Started Coding

Multiple entries with same key: Google Inc.:Google APIs:19=Google APIs (Google Inc.) (API 19) and Google Inc.:Google APIs:19=Google APIs (Google Inc.) (API 19) java.lang.IllegalArg

Solution 1:

Fixed by deleting and reinstalling SDK Platform 19 with the SDK Manager.

This worked for me as well (Android Studio 15 Preview)

please look https://code.google.com/p/android/issues/detail?id=189002&q=label%3AReportedBy-Developer&colspec=ID%20Type%20Status%20Owner%20Summary%20Stars