Steve, No, the problem was not related to yours in any form. The issue here was a third party program (FileVault) mounting a drive, and confusing the X-Plane plug-in path as X-Plane ended up being accessible via two path routes. This was fixed with a symbolic link (sh-3.2# ln -s). If you are unable to view the popup window for activation, my assumption is you have not installed the libCURL framework on BOTH of your Macs that comes with the Gizmo install given you are using the external HD.