I just got PD, and only used it once yesterday(started the getting started section;I got through a few pages) and today I can't use it. When I open it, it opens but then before it pulls up the window where I left off it crashes. I deleted and re-downloaded and reinstalled, but it still keeps crashing as soon as it is opened.

I am using a MacBook Pro, Os Lion 10.7.2. It has an intel processor and I downloaded the Pd-extened for Mac OS X intel.

I am really excited about learning this software, so your help is really super appreciated.

Sounds like it might be this:

http://puredata.hurleur.com/viewtopic.php?pid=28468#p28468

Thanks! It works, I just hope I don't have to do it every time.