I've got one Win2k Pro PC that won't let me install SP4 on it. It is currently on SP2.
When I run the installer, it unpacks the files and begins to prompt you to agree to the license, backup the current files, etc... However, after a period of time (not a specific point in the install, but a period of time), a pop up message comes up which says:
"update.exe has generated errors and will be closed by Windows. You will need to restart the program.
An error log is being created."
There is an error log created, but it doesn't say much of anything. Like I said, it's all dependent on time - you don't have to do anything within the installer program to get it to crash.
I was able to re-install SP2 on the machine. SP3 and SP4 behave the same.
Following some MS KB articles, I reinstalled the MSI installer program, but that didn't seem to help anything.
I've tried running it as a normal user, domain admin, local admin.
I've run it in Safe Mode.
I've downloaded it from MS, and used the Windows Update to install it - same behaviour.
I've run the program from a network share, and the local C: drive.