A corrupted file causes program to break #657
Description
I was trying to convert a book, where one of the tracks was (unknown to me) corrupted - showing as "0b" size and unplayable. Loading this file caused the following issues:
- visual glitches in the file list (some lines empty, some lines having several text lines overlaid)
- all tracks disappearing when the "Chapters" button is pressed
- "Start" button doing nothing
- Lots of errors in console output
I do not expect the program to work with broken inputs, but it might be nice to
- display some message to the user when stuff fails like this and
- make sure that a bad input file does not cause the GUI to glitch out too
Thank you for letting us use this for free and have a nice day.