So, for a project I'm working on, the Picking library seems absolutely perfect. However, it appears that in the current version of Processing, there have been some changes to the renderer that cause this library not to work. When I import the library, using the Add Library tool, and then call   picker = new Picker(this);, I get a NoClassDefFoundError, on PGraphics3D. To the best of my understanding, PGrapics3D is no longer used, as everything has been switched to OpenGL. Is that correct?

Has anyone found a workaround for this, or better yet, an actual correction? I'd love to be able to use this library. Here is the link to the source code for it.
http://code.google.com/p/processing-picking-library/source/browse/#svn/trunk/Picking/src/picking?state=closed
Thanks!