[solution on stackflow]
Android Error in Eclipse: “Unable to execute dex: Cannot merge new index 65799 into a non-jumbo instruction!”
One solution that I found that got it working for me was to add
dex.force.jumbo=true to my project.properties.
This was pointed out at: https://groups.google.com/forum/?fromgroups=#!topic/adt-dev/tuLXN9GkVas
This is assuming you are running ADT 21 as this feature wasn't available in previous versions.http://stackoverflow.com/questions/13439882/android-error-in-eclipse-unable-to-execute-dex-cannot-merge-new-index-65799-i
