Have been using QuickSilver (b3815) for a while now on my MacBook Pro (10.5.6), just recently experienced a QS crash and could no longer start the application, even after a reboot.
Following the guide on http://groups.google.com/group/blacktree-quicksilver/web/faq I was able to Quickly Reset Quicksilver Settings and was able to start the application again, and with a little troubleshooting I was able to track down the issue to: ~/Library/Application Support/Quicksilver/Shelves/ QSPasteboardHistory.qsshelf My QuickSilver Clipboard history file was just shy of 1GB! (configured to save last 50 clipboard states) I had been working with some large image files in PhotoShop, multiple copy and paste operations of high resolution photos seemed to cause the initial crash. In summary, I quickly restored all my original settings and simply deleted QSPasteboardHistory.qsshelf and my QS was back in action! I have since turned off Clipboard feature in QS since I have not really been using it, but figured I would share my success with this Group in the event anyone else comes across this issue.
