Building error: CommandInvokationFailure: any help?

Hey everybody, I’m trying to use google play and google mobads, but now I’m constantly getting this error:

Error building Player: CommandInvokationFailure: Failed to re-package resources. See the Console for details.
/Volumes/Jessin Rodenburg/Android/Apple/adt-bundle-mac-x86_64-20140702 2/sdk/build-tools/21.1.1/aapt package --auto-add-overlay -v -f -m -J gen -M AndroidManifest.xml -S “res” -I “/Volumes/Jessin Rodenburg/Android/Apple/adt-bundle-mac-x86_64-20140702 2/sdk/platforms/android-21/android.jar” -F bin/resources.ap_ --extra-packages

stderr[
ERROR: No argument supplied for ‘–extra-packages’ option
Android Asset Packaging Tool

Does anybody know how to fix this?

I want to bring this up since I have the same issue.
all my SDK’s (java, android) are up to date and I have the latest unity version.
worked flawlessly the day before yesterday and today it doesn’t.

haven’t changed anything at all