No worries Phil,
Glad to see you've gotten a start on the GTT; it is a new product so naturally there will be a few questions as you get to know what it can do.
First, please download the newest version of the GTT firmware
, revision 188.8.131.5296. We have made a few improvements to the AutoExec which may help in your application.
Next, the AutoExec should be saved without an extension. I believe the GTT Support Tool may add a .gsf, if so just remove that when you save it to the display. It should be saved to the root of the GTT, not in any folder.
Finally, the AutoExec will execute as if a series of commands were sent to the display in succession. You can load and even display bitmaps, but they may not appear instantly, especially if many are to be loaded or displayed. If all information is provided for each command the display will happily chug along, if not it will wait for the remaining bytes to be sent.
Hopefully that provides some idea of what the AutoExec file can and cannot do, should you have any further questions as you continue to get to know the GTT, please don't hesitate to post.