Two users cannot select default printer in XP 64-bit

We moved the servers over the weekend and come Monday, I have two users who do not show any printers as default. If you try to set any printer as default, it will not. No error message or anything, just doesn't set the printer as default.

If you try to run the VB script to add our network printers, you get a permissions error - but only for these two users. All other workstations are fine. It seems to be a problem with their profile since it happens when they log into other machines too.

Any suggestions?