Yes, for WinXP users, with the patched version, if your game stops at 95% while loading a mission, you must turn Grass OFF
I have a strange problem with the patched version: I have to turn Grass OFF because I run WinXP. Since, the sea looks very strange:
The solution is there if you only change one setting:

Change Forest = NONE
I hope this helps some WinXP users like me....
I have this from somebody else who mentioned it in a thread, unfortunately did not keep his name (nor the thread)