Combining Google's Drive API and Spreadsheets API leads to "Unable to execute dex: Multiple dex files define..." errors

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http://stackoverflow.com – In order to integate my app with GDrive I have followed the tutorial on https://developers.google.com/drive/quickstart-android In step 3 of the tutorial, the tutorial recommends to install the Google Eclipse plugin to take care of the library setup (this plugin let's you choose which's Google API's to use and creates the /libs folder including the jars for you). The tutorial shows how to take a picture and upload it to Google Drive. After working through the tutorial I decided to extend the example: since my app works with Google Spreadsheets I added the spreadsheets API (using the Google E (HowTos)