Byron stopped supporting BPT around maya 8.5ish. It was resurrected as an open source project for what looks like maya 2010. The link I found is here https://bpt.sourceforge.net/ as far as I could tell it's kind of half baked. It does not say for what version of maya it was compiled although the name would indicate maya 2010x64.

I tried it with maya 2012 and 2013 and it does not load. I am downloading the source for it now to see if it is worth trying to compile for maya 2012 and 2013.