We noticed a couple of major new bugs in versions 15.04 and 15.05.02 (according to the download filename and Help > About). Therefore, we made some quick fixes, which you can download now (15.05.06):
Fix frequent crashes with both Settings > GPU and Settings > Realtime turned off.
Fix the Timeline Split command producing incorrect results. If you saved a project with the faulty Split command in the short-lived v15.05.02, then the problems were also saved to the project, and there is no automatic fix for it. You should remove the problematic shots and recreate them.
On OS X, fix a crash when choosing Remove from the Timeline clip/blank context menu.
On OS X, fix the new keyboard shortcuts for selection control (select under play-head, move selection, deselect).