I tested 1266 and it worked. listing games at least, I didn't notice if the game number was mssing. it's usually due to big FAT32 partitions where it's slow to get all file's count from the file table. maybe it's an issue with the new FAT32 library?
Even Windows is slower to mount big FAT32 partitions because of the file table size.
I didn't try launching one yet.
But I remember a report saying it's crashing if trying to launch a game before the game count is displayed.
try disabling game count (I don't remember if it's only disabling the text or also the counting process) just to see if it fix the crash, or wait a little longer after the loader is displayed before launching a game.
that's another thing I need to fix. I don't know how to fix that (yet?).
If you have time, can you look into that issue greywolf? thank you

if you can't, I'll try to look at it, but it's not in my priority list.
edit:
taking a quick look at it, the option is threaded, and the thread should be cleared at game launch/loader exit when calling sys.cpp appcleanup()