[KevinH]

@democrite,
Files do not need diacritics to be have invalid utf-8 sequences. Invisible control characters can be inside. Also unicode normalization differences can occur. Linux boxes allow any byte sequences to exist in file names so non-utf8 sequences do exist.

You could try zipping up that image file and posting it so I can test with it.

We use non-native file dialogs as there were many crashing issues without them. You can drag and drop folders on the file open dialog left hand panel and they will be remembered as a favourite. There is no functionality lost with using non-native dialogs, they are just different.

Please just post a zip of the image folder that is causing this issue so that I can replicate this error. If private, just pm KevinH (me) with a link here on MobileRead.