I might be misremembering, but I think Tomb Raider might be one of those games that needs you to rip the subchannel info (or grab it from
redump.org) for it to work properly.
I haven't come across this with any of my games, but I'm guessing it's logical to assume that you have to rename the subchannel file to match the name of your rip, and have them both in the same directory. (Now watch as my guess turns out to be wrong.

)
EDIT: Never mind. I was misremembering. But apparently there are no less than seven different variants of the English-language version of Tomb Raider, including two marked as having EDC (I'm assuming this is Error Detection and Correction, which might be the issue).
Edited by Prometheus, 20 November 2011 - 01:14 AM.