I tried playing
Prince Jamie's challenge level pack, but got the attached error message upon which the game crashed.
I can reliably reproduce it via the following steps:
- Select the second level "One way in, No way out" of this level pack.
- Start the level
- Exit the level to the result screen by pressing the Esc key.
- Click on "Retry level" and the error occurs.
This does not happen for the first level of this pack.
I have both Sound and Music disabled in the options, but the volume is still set to the default middle value for both.