[nfetterly]

I'm upgrading from 8.48 portable, have it installed on my desktop and a USB drive. When i try to do the install / upgrade I tell it where it's installed, it sees it and asks me if I want to upgrade (i say yes), but the upgrade fails, message is;

Failed to delete Calibre program folder. Make sure calibre is not running.

I've tried this several times including whutting laptop down and then restarting Win 7 and trying the install before I start and any programs (other than what starts automatically).

Suggestions? Questions?

I then have to recopy Calibre off my USB because now 8.70 exe is there and I get an error code;

Failed to launch the calibre program. The system cannot find the file specified. (Error code:2)


I also have a hard time getting rid of / copying over the calibre folder as it says it's in use by another program (I don't know how to find what program that is).