Hoping someone can help. A month or so ago i upgraded to Calibre 3.2. Since then i have been unable to convert files from epub to other or from other to epub. i first thought it was just an AZW3 problem, but have since realised it is all file types. i've been able to use an online converter, so problem appears to be not in the files themselves, but in Calibre. I waited a bit and upgraded to 3.23 in the hopes that might fix it, but no joy. Is anyone else having this problem? any fix suggestions?
The error message is this: 'Invalid regular expression: incomplete escape \U at position 11'
thanks Kat
