Error 75: Path/File access error with Spyware Blaster

Whenever I try to update SpywareBlaster (Version 3.5.1) on a limited account I get the error: "Cannot write file to disk. Error 75: Path/File access error". However, if I update on a administrator account it updates like it should.

I'm pretty sure it has to do with the account type as I've experimented changing limited accounts to administrator accounts and back again. I also did a search in the forums, but it the threads seem "old" and I'm not sure if it'll help me or not.

My windows version is XP Home Edition with SP2. Please help, as any kind of suggestion would be greatly appreciated.

Edit: I've also looked at the SpywareBlaster Troubleshooting and Tips & Tricks thread for my problem.