This solution is for those who (like me) in IDEA 11.x changed the contents of the XMl file Android-SDK/adt-bundle-linux/sdk/tools/lib/devices.xml .
The solution is to take the devices.xml file from the source SDK folder and copy it to lib into the Android SDK folder.
No need to touch devices.xml in the .android directory, as IDEA 12 disables it during installation.

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