Converted Files won't show on Paperwhite

Hi all,

I converted 472 EPUB files into MOBI format, in order to transfer onto my new Paperwhite.

All went fine, using the latest version (2.48) and all transferred successfully, but only 8 titles will show in the List View.

I tried converting to AZW3 also, but same happens.

Having read other similar posts, I realise there must be a corrupted file in there somewhere, but I'd like to know how to FIND & REPAIR whichever one is causing the issue.

Is there some sort of checker (or other utility) in Calibre, or anywhere else for that matter, that I can use?

Any help, or info, would be appreciated :thanks: