This keeps happening to me as well with the copy I bought from XBLA, but I was able to get the game to launch by going to the Game Details page and launching it from there (My Games > Splinter Cell: Chaos Theory > Press X... > Play Now). Not sure why launching
from the "My Games" or "Recent" sections of the dashboard don't work, but at least in my case this worked for me.
Did this solve your problem?
Sorry this didn't help.
Great! Thanks for marking this as the answer.
How satisfied are you with this reply?
Thanks for your feedback, it helps us improve the site.