[crispy]

According to GCW, that title is protected with securom so one would expect a copy NOT to work without "hide cdr media" enabled, since the ATIP check would confirm a cdr, not pressed silver original.

I don't know how this feature of clonecd tray works but it must alter the ATIP read request, or at least the drive's response.

It could be a simple blacklist at work. The latest securom also blacklist Daemon Tools again (although the boys have updated again).
Without knowing how clonecd tray actually hides the cdr media, and what dll's or vxd's etc it might use to do it, it's impossible to say.

But of course you shouldn't have had "hide cdr media" enabled anyway with your DVD-ROM as it can't read the ATIP. That could also be the reason. Have you tried reading the cdr from a burner with the feature enabled, then disabled. The result would be interesting also.

But certainly interesting to hear your findings.