I had the same issues as the original poster.
To get past the screen going black during install I had to:
1. wipe the partition (I used the Disk Utility on the Jaguar install CD)
2. *Successfully* install an older version of server (10.0.4 in my case)
3. let Jaguar Server *attempt* to upgrade the previous installation (it failed)
4. reboot and using Jaguar Install CD Disk Utility, wipe (not partition) the partition.
5. switch back to the Installer and let it install a ‘New’ OS X Server installation
This (after 3 days of trying) finally got me through the installation. I also duped the Install CD and used the copy – maybe made a difference, I don’t know, but it was the only install out of about 16 attempts that worked.
To get past the Assistant hanging:
1. removed my en01 ethernet card
2. removed the original 64MB RAM stick and 1 of my 256MB sticks, leaving 1 256MB
3. reset the machine using the CUDO reset button
I did all of this removing stuff over several attempts…
Hope this helps,
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