Posted April 12, 2014
If your copy of RCT2 crashes when you try to launch it or, if it launches, you cannot load/save any games because the file chooser dialog does not pop up, then you need to enable compatibility mode for the game executable.
Locate the executable (usually under C:\GOG Games\RollerCoaster Tycoon 2 Triple Thrill Pack\RCT2.EXE), open the file properties dialog and switch to the "Compatibility" tab. Set the compatibility mode to "Windows 98 / Windows Me" and check the "Disable Visual Themes" checkbox.
That's it! The game should run properly now. I tested this on Windows 7.
Locate the executable (usually under C:\GOG Games\RollerCoaster Tycoon 2 Triple Thrill Pack\RCT2.EXE), open the file properties dialog and switch to the "Compatibility" tab. Set the compatibility mode to "Windows 98 / Windows Me" and check the "Disable Visual Themes" checkbox.
That's it! The game should run properly now. I tested this on Windows 7.