Windows memmory "read" error

[AnToine van Maarle]

Hi,

On some winXP machines I get with my program (compiled to .exe using
McMillan, programmed in Python and wxWindows) the following error message
(translated from Dutch somethin like):

Intruction on 0x00de3ce9 directs to 0x00000028. The write or read
instruction ("read") on the memmory failed.
Klick OK to end the programm

(see attachment for error message picture/screenshot)

Has anyone any idea?