I recently downloaded '18 Wheels of Steel: Across America' - and upon first loading it up, the game worked absolutely fine. This was a trial version, just to note! I had to close the game down for a while, but when coming back to it, an error message arose saying that prism3d.exe wasn't working - and the solution provided was simply a patch made by the production company which was of little relevance.
Anyway, I uninstalled the game and reinstalled, and it worked fine the first time. Again, however, the prism3d.exe problem error came up again when trying to load it the second time. Forgetting this completely, I went ahead and brought the game! The purchase simply allowed the trial version to be played fully - but then the same problem persisted.
Knowing it worked fine first time around, I don't think it has anything to do with my graphics card, and i've updated my graphic card driver just in case to no avail. Apparently this prism3d.exe is something created by SCS which enables the game to work, but I haven't had any luck finding out how to make it work.
Any ideas? Thanks.