Steps to reproduce: 1) Open a .CSV file in Pulseview. 2) Without closing the .CSV, close Pulseview. 3) Delete or modify the CSV file. 4) Re-open Pulseview. Correct behavior: Pulseview re-scans the file or shows a warning that it has changed. Actual behavior: Pulseview usually crashes. It *always* crashes if the file was deleted and it *sometimes* crashes if the file was modified.