If you have an error launching the game check on these possible solutions:

1. Your Antivirus may block tomb4.exe (Movement at the Monastery.exe) from being launched. 
You will need to add an exception to the game folder to prevent this from happening.

2. Certain files for Direct X to function correctly need to be installed. 
If you receive an error about Direct X you may need to install the Visual C++ 2010 Redistributable Package (x86) and Direct X itself.

3.Hold the control key while the game is launching to access the setup and check over your games settings.

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Some of the newer ATI Graphic cards can struggle to run some TRLE levels at a decent framerate. 
Using the dgVoodoo 2 wrapper may help improve performance here.

http://dege.freeweb.hu/dgVoodoo2/dgVoodoo2/