Error 64 refers to not being able to find a certain WAV or WMA file.
WAV_INSTRUCT_RENDER_ERR_FAILED_FILEOPEN = 64; could not open a source wave file

Usual cause of that is needing to run one of the updates, typically the May 3 one that you mentioned http://70.38.78.232/rtpatch/realtracks01-82_update_may03-2010.exe

If you still get it, please freeze the song, and send it to beta@pgmusic.com.


Have Fun!
Peter Gannon
PG Music Inc.