BigMart

I am trying to update my CCleaner on my ancient laptop. It has been working okay until now. Now when I try to update it it gets as far as 85-95% loading and then stops and Windows reports that the installer has stopped working. I removed CCleaner altogether and downloaded a fresh copy but have the same problem. I have tried running it as Administrator and in Safe Mode all to no avail. Any suggestions?

I have been running CCleaner (free version) for a number of years without problems. Some months ago I upgraded to the pro version and when I close my browser (Firefox) it is supposed to save tabs for the next time I open it up again. This has been happening until recently. Now when CCleaner clears my browser it also clears the tab settings (it never used to). Has something changed with the product ? I have now reset it not to automatically clean my browser on closing, thus preserving my tabs. Is there anything else I can do? I am running Win XP with SP3.