Hi Pete, I don't currently have a printer so no, I can't print due to not having it setup.
I see 2_CUPS.L1 ends with,
Copying file: M:\usr\bin\lpr.exe --> M:\TCPIP\BIN\CUPSLPR.EXE: OK
Installing CUPS GUI
Do want the list of packages that was installed here? 43 of them not including the first preliminary 7. Should be listed in your 2_CUPS.L1.
I have noticed that the RPM servers seem to be down a lot recently, both Netlabs and the Rosenthals mirror, which also raises the question of whether you had other failures. Might be worth searching your /var/log for "Error Downloading Packages" or Error, though that does find a bunch of stuff with error in the name.
Edit:, missed that the RPM's were on the ISO, which makes it weirder, perhaps a bad burn as IIRC, you used a DVD to install. Shame doesn't seem to be a MD5SUM of the ISO, guess due to the personalization.