Protected Files prevent Adminpak install

I just installed a Win2k workstation on my Win2k network and was unable to install the adminpak.msi for remote administration. It starts copying files and 90% of the way through it stops at: WINNT\system32\schmmgmt.msc and gives me this error message: Windows installer service cannot update one or more protected windows files.
I tried to load it from the 1386 folder on the W2k advanced server CD as well as from the server itself. I tried it logged on as the Domain admin as well as the Local admin but still had no luck. If anyone knows what the problem is please reply ASAP. Thanks