Ok, time for some obvious questions:
Are the install programs (Norton & Crystal) on CD, or on a network share?
If share, are you sure your logged-on account has all appropriate rights?
If CD, are they original media, or burned copies?
If original CDs, are they free from scratches and in good shape?
If burned CDs, are they burned correctly?
Did you try these installs on another machine, just to verify the integrity of the software? You don't have to install them fully on the other machine, just try and get past the steps were you are getting stuck on your Win2KServer. (ok, that wasn't a question)
Anti-virus disabled before you install?
Now for a suggestion: do the installs from the Add/Remove Programs applet. Don't do them by either double-clicking the setup.exe files OR by running setup.exe from the Run box.
Doing an install from the Add Programs option in Add/Remove Programs puts Win2K in "inactive" mode (I "think" that is what it is called). Apparently, doing an install from Add/Remove Programs sets a couple of variables in Windows to a different status then just running the installer from a Windows Explorer window. It is a more graceful way of doing an install for the operating system.
And there is nothing inyour System Log? Weird!
Anything weird looking in Task Manager? Does the setup.exe file run at 100% CPU?
These are my thoughts on this.