I have made "good" backups up of UT'03, Nas2003, and Vietcong, all Sec. 4.8+ protection, using my Dell [ XP, LiteOn drives ] with B-write. They play fine in my pc where I made them. Nothing works downstairs on the Dell [WinMe, LG and Sony drives ] Perhaps some new or different firmware for the LG cd rom would fix that.
Here is a copy of a post from January, sorta' "nails" my problem as well.
In the client PCs of my son and two friends, all never installed with any burning software, and game V2166 UT2K3 installed (V2141 Taiwan + V2166 patch), my backup UT2K3 CD only works on the PC with BlindWrite 429 standalone AutoPlay + Lite-On 163D.
So, I believe the op is not the hangup, it is the older LG cd drive on my second pc.
LiteOn 163 DVD's are being sold for less than 40$, that looks like the answer.
Because,,,,,,,,,,,,,,,,,,,,,,,,, I did a "test" install on my son-in-law's Dell 8100, WITH a LiteOn 163 DVD drive and BW autoplay, and the game opened.
It is possible there is another software roadblock,,,, but I am guessing not so.