Bugfix provided by Bandit:
- The Alkatraz protection incorrectly points the Stack Pointer to a data table after loading the game, thus corrupting some level data. Because of this, the game either crashes (tzx version) or presents severe attribute/graphic glitches (tap version) at a certain location.
The problem is corrected restoring the original values in this table.
Fixed using POKE 63423,16: POKE 63424,11: POKE 63425,255: POKE 63426,0
Modified "BUGFIX" file provided by Einar Saukas.