I'm running Netbeans 7.1 on Mac OS X 10.7.2 and have NBDrupalDevelToolV2 Version 2.0.9 enabled.
The only problem I have with it is when I click "Refresh Library Data" the directory tree disappears from the API Tree Window and the functionality is gone.
All that shows is a document icon - no more folders.
Otherwise, This plugin is GREAT!
I'll check this out in the next couple of days and let you know what I find. It doesn't happen in Windows, so it must be something MAC and maybe *Nix related.
Fix broken refresh in *nix/mac #17
release 2.0.10 ticket #17 merge #18
I finally got this fixed after a lot of hunting. Sorry it took so long!