HelloI had exactly the same problems, these are not the addons. The problem is Windwon 7 64 bit.I have it solved now witth the follow steps I have all the *. dll files released at the user level (FSX and FSX addons) with read and write permission.In addition, I have installed some addons on the second PC and let communicate over the network with the FSX. (FSMap, EFB, etc.)Please excuse my bad English, best regards and greetings from switzerlandRuedi