Error Trapper when I load game

I have roller coaster tycoon with the loopy landscapes and corkscrew follies and when I load the game I get this error,
" Error Trapper
Exception Raised - Access Violation
Error Location: Windows Unknown Driver."
I just played the game last night and I didn't have this problem but this morning I did. I tried restarting but it's still doing the same thing. Please help thanks!