Windows 7: Can't change any file properties, error 0x80004005

Hi there,

I was trying to change a mp3 file properties > details, but it won't let me. There is nothing listed.

When looking in explorer, it shows no album information or title.

It does it with video files as well, so I am assuming all properties.

When I do change something from the bottom, it gives me error 0x80004005: Unspecified error.

'An unexpected error is keeping you from applying properties to the file'

I used to be able to, so not sure what happened!

MediaMonkey can see the details, but every file on the computer, I can't see the details in explorer?

Do I have to register some .dll? Regserv32 of some sort?

I believe I know what is causing the issue, but not sure how to proceed.

I did a system restore back a week or so and it fixed it (but I reversed the restore), but Explorer.exe is giving me a 'No such interface supported error' when I right clicked on desktop and selected anything other than gadgets.

To fix that error I ran this in CMD: FOR /R C:\ %G IN (*.dll) DO "%systemroot%\system32\regsvr32.exe" /s "%G

So I believe that command did something to the properties attributes.

Is there anyway of fixing the Explorer.exe error without running that command? Or is there a way to get both things functioning without one failing?