I attempted to import a sample (KitchenSink) and got an error. The cause of this turned out to be I already had KS installed, then deleted it, but did not remove it from my workspace. When the folder is deleted from the hard disk, the import completes as expected.
Steps to reproduce:
1) Install and launch Studio 1.0.8
2) Import KS sample
3) Delete KS sample but do not check the "remove for hard disk" option
4) Attempt to import KS sample again
The sample import will fail with the attached dialog
A prompt stating the sample was there and an option to overcome this situation without having to use the finder to remove the old sample