I have been going though the android tutorial on the developer site, and have run while trying to add actions to the Action bar (I am using the Support Library to support ve
I had the same issue (except my app crashed).
Basically, I just followed the Support Library Setup on the android site.
I had the following things wrong, and once fixed, the app ran as expected:
Once I fixed these things, I needed to remove and re-add the android-support-v7-appcompat project as a library (Project > Properties > Android > Library > Add)
Hope the link above helps anyone coming across this page.