I'm running Microsoft Web Platform Installer and it's trying to install IIS5.1. Unfortunately I've got the following error:
Setup cannot copy the file staxmem.dll
Ensure that the location specified below is correct, or change it and insert 'Windows XP Proffessional Service Pack 3 CD' in the drive you specify.
Now I downloaded the service pack through Windows Update so I don't have the CD. I did a search via Google and came up with this support page. I followed the first set of instructions and there wasn't anything wrong with the database, so I proceeded to step 2. Unfortunately this again requires the Service Pack CD.
A search of the hard-drive has shown that the file is in the directory specified.
So how do I get the installation to proceed?
Is it because the file already exists at the target location and is in use? If so that would imply that IIS is already installed on the machine. So in that case the question becomes - why is the Web Platform Installer trying to install something that's already installed?
Copied from ServerFault rather than migrated