Hi,I have installed RC4.3 under VISTA+FSX.When I try to load the flightplan I gotRun-Time error 713Class not registeredYou need the following file to be installed on your machine MSSTDFMT.DLLI have dowloaded that file and installed inside the "SYSTEM" folder but nothing happens.Any ideas?Thank youLorenzo

Not sure about Vista but:http://jdtllc.com/FAQ.htm#29You'll have to be admin to do this.