[james5d]

Trying to use Calibre in a Win10 environment on my computer, but it can't even open it's own user guide which gets added by default, let alone any epub files ( other e-readers have no issue with epub files, so the files are not corrupted ). I've had a previous version of Calibre working in the past ( can't remember which version ). I've installed the current version, removed the program ( using the program wise uninstaller ), then manually removed all user files which seem to be left ( C:/user/appdata ( roaming and local ), and the storage folder, and tried again. I've also tried the portable version ( the previous version number ). No success. Any ideas on what the problem could be ? Thanks