Originally Posted by htbyron
[INDENT]ERROR: Bad database location: Bad database location u'E:/My Documents/Calibre Library'. calibre will now quit.
It looks like the Calibre installer is inserting the letter "u" before the pathname, but maybe that's just how the error
The 'u' just indicates that the string that follows is a Unicode string.
Does the folder named exist? If so are the permissions set to allow full access? If it does exist and you have not used calibre before is that folder empty (in case you have a corrupt metadata.db database file there from an earlier failed attempt).
Note that uninstalling Calibre does not remove any Calibre settings. The fact that drive 'E:' is mentioned in the error message you quoted suggests that there are stored default settings from an earlier attempt. If you want to remove these as well and start with the default initial settings then you need to find the 'calibre' folder under your user profile and remove that as well.