Can't Install DLC

[asdfzxc]

I got the Broken Steel/Point Lookout DVD a couple days ago with my Christmas money, but when I run the installer I get the following error:

 

"Unable to find your Fallout 3 installation. Please reinstall Fallout 3."

 

I'm running the retail version of the game on Windows 7. I have copies of the install in both C:\Program Files\ and C:\. Anybody know a way to fix this?

[aerialz]

I believe the problem here is that you installed the Game to Program Files, this has been known to cause strange problems at least on Windows Vista (this might be the case with Win 7 too). I would recommend installing the game someplace else on the C:\ Drive, for example C:\Games\Fallout3 or C:\Fallout3.

[Branimirzg]

OR: Give yourself full control over oblivion directory... Right click on main fallout folder/properties/security/edit/

your username/full control

[asdfzxc]

I believe the problem here is that you installed the Game to Program Files, this has been known to cause strange problems at least on Windows Vista (this might be the case with Win 7 too). I would recommend installing the game someplace else on the C:\ Drive, for example C:\Games\Fallout3 or C:\Fallout3.

My first install is in C:\Bethesda Softworks\Fallout 3, the Program Files one is just there just in case. Editing the first post for clarity.

 

@Branimirzg: I'll try that.

 

Edit: I found the problem... my FO3 install was installed on Vista, then copy-pasted from my Vista drive to my Win7 drive. This normally works without any problems, but Fallout 3's updater appears to use the extremely shaky method of "check Programs and Features (Win7 version of Add/Remove Programs) for Fallout 3 and find the install directory from there", which requires that I reinstall Fallout every time I upgrade my machine. Which should be sometime this weekend. And this time it'll be a full reinstall of Win7. Lovely.