I am getting this error when I try to compile an Unity 3 project for Android on MAC OSX
"Error building Player: ArgumentException: An empty file name is not valid."
I have tried to update Java to 1.7 (my previous version was 1.6) and rename the vuforia prefabs.
If I don't import the vuforia unity package, the project compile successfully. As soon as I import the package (even if I don't use any element from the package in my scene) the project will fail with the message above (no further hint of the error).
I am using Unity Pro 3.5.6f4 and the vuforia unity package 2.6.7 downloaded from here: https://developer.vuforia.com/resources/sdk/unity
My OS version is: MAC OSX v10.8.4 (Mountain Lion)