I am not sure what you mean but I reinstalled it in a folder in E drive labeled it AF 5 SIM then loaded the disk ver 5.0.3.5 ran it as ADMIN (I have full control over file) then installed the update, ran it as ADMIN then flew several planes and it works great. I cannot get the 5.7.1.1 to load. After download I start the program and it locks up. I do not understand why I can load and run ver 5.5.0.7 installing the program 2 different ways and everything works great… only the new download is a problem. Why would the paths be different? OS is WIN & PRO 64 bit.