This (v6) ran OK on a couple of files (got the Success! Enjoy!) message & no error messages - But Calibre (6.29) chokes on them, imports them OK but will not display or convert format - (K4pc opens & displays them OK)
Am I missing a step somewhere here?
Edit:-
Doh!
By sheer chance the two free books I chose to test this on are both Topaz (TPZ0) at start of the file, checked several more with hex editor none were - works fine on those
Reading the posts I thought I would get a message from skindle if they were Topaz