hyaxlord

Did you edit this post when I wasn't looking? I ran chkdsk through cmd, but this was before catching the 'run as admin' bit, and it said the drive was locked as it was ntfs, and something about doing the scan on a restart. So I did that. It ran through and recovered a bunch of orphaned files this time, restarted again, I tried to run the installer, and... It's working perfectly now. Thanks a lot for your help guys. Really quick and to the point!

Thanks for the speedy response. chkdsk ran through, did its thing. It said it had sorted some indexes in files, deleted a couple of things, and then closed itself before I could get the details. Just in case, I tried to run the installer again when it had finished but got the same error.

I started getting a random error on the old version I was using (3.31 I think) and before it occurred to me to check the forums here, I deleted the programs and did a clean-up. I then came here to download the newest version, but when I try to install I get the following error: I'm using XP with the latest updates and SP3.5 fully updated (and freshly repaired), and there are (as far as I can see, though I've only skimmed the registry) no traces of PDN left on the system. Any ideas what's causing this? Any other info I should add?