I run it in admin it ran fine for couple of mins then it crashed again. just found out the game crashed without activateing the trainer first so I think it is the game I think i did click on the game first the clicked on the trainer then it just crashed instantly
I have windows 8.1 64 bit and it works just fine. There are the usual crashes you see with this game. it was quite glitchy on the pc for such a popular game. I recommend getting the UOP (Unofficial Oblivion Patch) you can find it on most of the mod sites. it fixes a lot of the bugs you see throughout the game and some of the crashes.