Have logged hundreds of hours in Oblivion on both 360 & PS3. Would now like to play/mod it on pc. Have a fairly robust rig:

Case: Cooler Master HAF 932 Full-Tower
Power Supply: 1000 Watt Corsair HX Silent Edition [Dual/Triple/Quad SLI Compatible]
Internal Cooling: Coolermaster V8 CPU Cooling System
Motherboard: EVGA X58 3X SLI [Intel X58 Chipset, Supports Triple SLI or CrossFire]
CPU: Intel Core i7 920 Quad Core Processor 2.66GHz 8MB L3 Cache [Overclocked to 3.33GHz]
GPU's: 2x's EVGA nVidia GeForce GTX 285, 2GB Each [4GB VRAM Total] Running in SLI
HDD's: 2x's Western Digital VelociRaptor 300GB @ 10,000 RPM
Memory: 6 GB [2 GB x's 3] DDR3-1600 Triple Memory Module Corsair Dominator w/DHX technology
OS: Windows Vista Home Premium, 64 bit

OK, so a few weeks ago Steam ran a special, selling Oblivion (w/ all the official plug-ins) for cheap, so I thought: "What the Hell, give it a shot"...

Have Oblivion (version 1.2.0.416) installed in the Steam folder, which I optionally installed directly on c-drive (c-drive\steam\steamapps\common\oblivion), not in the Programs Folder.

Question # 1: The game seems to run ok (though I've not advanced that far yet), but when I go to quit, it locks-up every time. Regardless of whether I launch it with the Oblivion Launcher or launch it through the Steam Application (from the "Library" menu) it's the same deal every time. I always end-up having to forcibly "end task" with the Task Manager. What's going on there??

Question # 2: I've read that the official plug-ins are not compatible with 64 bit Windows (just like Oblivion supposedly isn't with Vista). Are they just not "officially supported", or will they really just absolutely not run? I've not made it far enough in the game yet to see for myself, but thought I'd ask (here) while I was at it...

Thanks in advance for any thoughts or helpful suggestions :liplick:

1. Crash on exit is fairly common. Usually an issue with mods, http://tesnexus.com/downloads/file.php?id=22410 will avoid this.

2. They are not supported but then neither is Oblivion itself.
The major issue was with the installers for the retail download versions which were not compatible with 64bit OS's and workarounds had to be used to install them, this is not an issue for the steam version.