Help I've Lost My Props!!!!

Greetings all.About six months ago a message was posted on this forum by someone who was getting scenery error messages in flight sim. An answer was posted by someone who had found the culprit...the default Mooney that ships with Flight Sim had lost it's prop! The error message is a pop up which says "Scenery not found..this means some buildings etc. will not display."The solution was to go into the Cab files on the original MS discs and replace the prop texture. Well I now have this same problem again and I cannot find the post and after looking at all the CAB files, I could not figure out which one may be missing. If anyone knows the correct soultion to this, I certainly would appreciate it.(PS the same thing is now effecting my C182 RG. If I choose either it or the Mooney, the error message comes up.)Thank You very much,Vonat1