bastwren

Thank you, hazelnut, for your quick reply. I followed your suggestion to uninstall, reboot, and reinstall from the provided link. That did the trick, and CCleaner runs gorgeously, no problems. I am amazed at all of the wonderful changes that have been implemented over the past year when I was off line! I appreciate the suggestion and link to BlueScreenView. It didn't show any crashes, but I used it after I booted in "Last Known Good Configuration" mode (to resolve a problem unrelated to CCleaner), so I assume that is why it came up empty. At any rate, it will be a valuable tool to use in the future. It is a relief to have CCleaner working, and to have resolved the problem so simply. Thank you very much for your help.

I have been using CCleaner for years (it is outstanding). I just got back on line after about a year, and got busy updating a few things, the first of which was CCleaner. After updating to build v5.05.5176 today, though, I went to open it and immediately got a BSOD. Whether attempting to run it from the desktop icon, or the context menu of the recycle bin, I got a blue screen. I am (still) running Windows Vista, IE, and am currently only using Microsoft Security Essentials and Malwarebytes Anti-Malware for protection on this PC. I have never had a problem with CCleaner, nor any other Piriform product, and would love to have this resolved so I can continue using it. Please excuse my naivete, but is it because I updated from one I used over a year ago, skipping builds along the way? I hope this can be resolved...I really don't want to be without CCleaner. Thank you for your help, and for all of the exceptional programs you offer. I am on a fixed microincome, and it helps to have such outstanding products free of charge. Edit: I should mention that it installed (i.e. updated) fine, but it was when I attempted to run the program that it blue screened. I didn't want to keep trying to get it to run after the second blue screen, for obvious reasons. Thank you.