Vista - Can't change EFS encryption on a file.

I'm having a weird problem under Vista Business X64. Everything was fine until I upgraded to a larger harddisk using Acronis TrueImage. Now if I create a new file, I can't change it's encryption. I can do anything else to it such as look at it, move it, delete it, etc, etc. I just can't change the encryption. If it is created in an encrypted folder, I can't undo the encryption. If it's clear, I can't encrypt it. It pops up that error dialog that says something to the effect that I need to have adminstrator priviledges. It's that dialog that's associated with trying to change a file that was encrypted with a different certificate than the one you are using. But since I just created it, it is using the same certificate that I am using. I verified that under properties. What can be the problem and how can I fix it?

thanks.