Strange DLL error when installing SP4

[jackbnimble]

I installed service pack 4 on a Windows 2000 server SP3 server. This server has Exchange 2000 SP2. As the service pack 4 installation was finishing up, a dialouge window titled "sp4iis" appeared stating the following: "Required DLL not found". The only option was to click "OK", so I did. A second window appeared stating, "Setup failed to remove ism.dll script mappings. Service pack setup will abort". When I clicked "OK" (only option) on this window, a third window appeared instructing me that the service pack installation failed and that I needed to reboot and use my emergency repair disk to restore settings. I tried to apply the service pack again; same error. I then rebooted and the system came up fine; I did not use emergency repair disk. Since then, I've tried re-applying service pack 4 many times after stopping IIS services, stopping Exchange services, removing recommended script mappings, and more. All attempts produce the same exact error. However, when I check my version of Windows 2000, it reports service pack 4.

Can anyone please help me with this mysterious problem? I've searched the net for people experiencing similar problems but haven't found much.

 

[ksukenny]

check out this thread - it has some related issues with sp4 thread96-591052