During our release of Path Finder 6.5.1 yesterday, we noticed some users having an issue with scrolling within Path Finder. This was something caused by OS X, so we were able to pinpoint the issue and solve it rather quickly.
You can download the patch by clicking “Check for Updates”in the Path Finder menu. Please visit support.cocoatech.com with any questions or issues.
1) Fixes to some bugs introduced in 6.5.1