I have sort of a similar problem with win7 and PlanG.
Install was no problem. Followed the User manual page by page. PlanG is exactly what I want and what I need. Except that...

...when I connect PlanG with FSX (single computer, each program screen side by side) the previously loaded flight plan in FSX appears in PG and then both screen go blank, the whole computer seems to freeze and I get a message that PG has ceased to respond and that I have to shut it.
Connexion option is on AUTO (tried with Simconnect radio button, but nothing happens), pipe
local host. I have FSUIPC already installed and is shown in the FSX addon drop-down menu. Is there a possible conflict here with Simconnect? I really want this to work.

Another problem is that after downloading the necessary elevation tiles and copying them in the apropriate PG folder, the Plan Elevation option sqare remains grayed out.
Please HELP
mariemai

EDIT: Got the message DISPLAY DRIVER STOPPED RESPONDING followed by another message that says that PlanG stopped responding. Video card is NVIDIA GFORCE 120