How to roll back to prior version? SOLVED

After installing the Braintree 1b update, I've been getting crashes and dropouts galore.  This is even on a new project with no plug-ins except AD2 and my converter set to its highest latency (1024).  I want to go back to the original Splat release to see if that would solve my problem with this project.  I did a quick search and found no reference in Google and this forum's search.  Any help would be greatly appreciated.  Thanks.

Thanks, Ed.  That was too easy :)