SUMMARY I was trying to copy files/directories to a USB stick(FAT formatted). This failed with generic error message. STEPS TO REPRODUCE 1. Create a folder with a name that has a space character at the end. 2. Try to move it to a USB stick 3. Error. OBSERVED RESULT Generic error message. EXPECTED RESULT - More informative errror message ("can't have [these characters] at the end of the file name") - Suggestion to correct the file name automatically.