Hi Alex. If you're getting an error saying "Illegal Memory Address" or similar when you try to start the game, there are two possible solutions that I know of. First, try running the game as an administrator. If that doesn't work, try adding the game to the Windows DEP exclusion list (instructions are here:
http://www.windowsanswers.net/articles/dep-config).
One other thing I recommend trying is disabling OpenGL graphics, by going into the gameoptions.ini file and changing "OpenGL_graphics = 1" to "OpenGL_graphics = 0" (without quotation marks). OpenGL is a new setting in V0.25 which is on by default, so it might be the cause of your problem.
Good luck - let me know how it goes!