What if the demo doesn't start...

The UO "Demo" is a slightly modified OSI UO Server and Client which was bundled on the Ultima Online Second Age retail CD. This forum seeks to reveal it's mysteries.

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Joined: Wed Apr 08, 2009 6:35 am
PostPosted: Sun Mar 28, 2010 4:24 pm
Lately I've helped several people making the demo run and I wish to share my experience.

First of all, the demo requires the 2D client. If you can run the 2D client the demo should be able to run without any problems. But the demo is rather old and has some detection quirks which makes the exeuction fail.

The demo client also contains a serious bug which will make it crash if the StartExePath registry entry is missing! And in some cases it will exit cleanly without reporting an error while there was one.

These are the requirements to make the demo run:
1) Registry Key requirements:
1a. "HKLM\SOFTWARE\Origin Worlds Online\Ultima Online" can only contain one sub key and this must be named "1.0". Any other key causes trouble so export and remove it/them.

Windows 64-bit users :!: : Be aware, the registry key is "HKLM\SOFTWARE\Wow6432Node\Origin Worlds Online\Ultima Online"

1b. The StartExePath must exist inside the "1.0" sub key. And its content should be similar to the ExePath entry and should contain the string "uo.exe" or "godcli.exe". WARNING! StartEXEPath should not end with client.exe!

2) Game directory requirements:
2a. Inside the game directory you must have a directory "language", this directory can be empty so if it doesn't exist, create it!


3) UO.CFG requirements:
3a. The UO.CFG file must contain an entry "CdRomDataPath=XXX" where XXX is your game directory, the demo uses this directory to check the existance of map0.mul and for locating the tutorial (if available)



Running UoDemo+ is another seperate matter, please ensure that the original demo works and then review this topic : http://forum.joinuo.com/viewtopic.php?f=32&t=327

As an extra, this topic explains how to make the old tutorial work again: http://forum.joinuo.com/viewtopic.php?f=32&t=575


Edit 2010-08-04: added the correct registry key for Windows 64-bit...
<Derrick> RunUO AI is kind of a functional prototype, which i have hacked into something resembling OSI behavior, but only by complitcating everything

Posts: 16
Joined: Wed Jun 10, 2009 2:27 am
PostPosted: Mon Mar 29, 2010 11:55 pm
Good post, I was unable to get the demo working before until Batlin explained to fix the registries to me.
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Joined: Wed Feb 08, 2012 5:01 pm
PostPosted: Sun Feb 26, 2012 3:29 pm
I tried this as with Demo and Demo+ and I still get that error 64bit win7 also I followed the directions about the right targ files no spaces in uo.cfg etc

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Posts: 455
Joined: Tue Jun 17, 2008 2:33 pm
PostPosted: Sun Feb 26, 2012 3:51 pm
If you can't seem to get it, try the UO:98 installer. It will install the regular demo and the UO:98 mod
viewtopic.php?f=34&t=1046

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