Making Surf Roo Addon work with STS 2.5.2

Is there any method to use the surf roo addon with STS 2.5.2? Downloading from trunk and building gives a NullPointerException when I try to install with the osgi commands (from within STS and from roo at command line), which I can reproduce on Mac OS X and Win 7 (both 64bit).

I've downloaded roo-1.0.2.RELEASE to use the surf addon 1.0, but not finding how to get STS to recognize that version of roo (it doesn't appear to be an osgi "bundle?").

I understand everyone is busy with development, I'd really appreciate any time to get this working.

thanks, gene