EAccessViolation after changing number of monitors

Reproducible sequence:
1. Open and use PSPad on my laptop (Windows XP).
2. Make Windows add an external monitor, or remove it, using display properties -> settings -> extend my Windows desktop onto this monitor.
3. In PSPad, click New File, or Open Selected Files.
4. Get pop-up titled PSPad.exe - application error. I hope this will allow you to see a screen shot taken in January: . Got same result just now, as I have for many months.
5. Click OK in the pop-up.
6. Click New File, or Open Selected Files.
7. Behavior is now normal, until the next time I add or remove the external monitor.