has anyone encountered constant runtime erros while playing 15 days..I keep getting cougar engine runtime erros???

Maybe it didn't install correctly. Have you tried uninstalling and reinstalling? Make sure your video card meets the system requirements. Also be sure to temporarily disable your antivirus before installing or it may block the game from installing what it needs to. If the game installation asks to install DirectX, be sure to allow it even if you already have DirectX.

ive done all that and my driver does meet the requiremnts and im still getting that cougar runtime error im almost finished with the game and i cant complete it it keeps crashing..

There are people with computers well above the requirements who are having difficulties. I'm afraid it wasn't adequately tested before release. I guess you could try using older drivers -- dating from the time when the beta testers would have been testing it. Or you could try using someone else's saved game and see if your problem is with your old save. Ask for saves over in Hints.

yea maybe ill try that its frustrating that it keeps crashing near the very end