Sorry Mate, I don't know of a specific problem in this area.
But with CFS3, if someone told me that their P.C. came alive and walked out of the room while this excuse for a Computer program was loaded, I would believe it. ;D
All I can suggest is check the B26 folder and see if there is anything obvious missing (compared with the general contents of the other playable planes).
I'm pretty sure it's OK to do a RE-INSTALL in this SIM without gumming up the works, but you will have to reinstall the patch after.
Get another opinion though, before you re-install. I'm not 100% on it.
