You can see new version of NBAndroid plugin on our auto-update center again. This time there is a fix for classpath resolving to find correctly sources belonging to Android library projects.
I noticed the bug few days ago and probably it was caused by a change in build process that creates a copy of AndroidManifest.xml file in bin directory now. This confused our plugin that expected there is another nested project. Anyway the problem is resolved now.
Together with this change there I integrated a (slightly modified) patch from Steve Roy to give you direct access to either AVD manager or SDK manager.