Where is that stated in the product descrioption? You sell products for P3D 4 and "4" means 4.0, 4.1 and 4.2. If you force customers to update to the recent release you should quote that in the forum as an announcement!
We'll add that, sure. It's just that while I might understand someone still not updated to 4.2, since it has the annoying menu bug problem (but there are workardounds, at least), I couldn't imagine someone using GSX with 4.0, which was almost unusable, due to the black textures problems, for which there was no solution.
Besides that, you are the arrogance in Person! I opend a thread in the generell forum with describing a problem with the Addon Amanger not running anymore in P3D 4.0 after the latest update. No reply yet, nothing!
No, I was just one that too a day off, after staying up all night until 7:00 AM, during Easter vacations, to FOUND and FIX this problem so, you would excuse me if the reply times were a BIT slower than usual.
I bought a full licence of GSX and updated this weekend with the result that nor the sceneries not GSX is running anymore in P3D4.0. Very nice from you guys.
This is caused by the fact that some functions in the SDK we use now, appeared in 4.1 and by compiling using the 4.1 SDK, the program won't run on 4.0 anymore. And those functions were made to increase performances, since we use the (faster) PDK instead of Simconnect for several things, like the camera position or the eye position, that must be read at each frame, and would pose a significant strain on Simconnect (and other addons), but now they don't anymore. But they require 4.1, at least.
I expect to get the Addon Manager running on P3D4.0! Otherwise plese refund the money for all licences I bought from FSDT.
You can still use the version you bought it, assuming you kept the old installer, and install it with the network disconnected, so it won't download the update.