This is basic functionality. Massive parts of my collection cause playlists to not sync. The only reason I’ve figured out which files are causing it is because I manually went through dropping in 100 at a time and syncing until I saw that the file count didn’t match. At no point does it error with “Oh look, this file is causing problems” it just silently falls on its arse.
If you were going to a gig, prepped your playlist and hit sync to usb stick, got to the gig and found half your set was missing you would be might ■■■■■■? right?
It should not be down to the user to figure this stuff out. This is programming 101. Sanitise your data input, provide meaningful error dialogs… In fact… there should be no need for error dialogs as Rekordbox, Traktor, VLC, Windows Media Player, Foobar 2000, Serato, Virtual DJ, Mixxx and no doubt some other random DJ program I’ve forgotten about all manage these files just fine… Yet Engine Prime falls on its arse.
This software is “Not fit for purpose” in the UK and Europe in that it fails to do the function its advertised for sale as.