I got your "Hex3.cxt" file loaded up and it is set to 33x33 hexes at 200 dpi/resolution. Is this meant to be just part of a much larger map? Because only about a sixth of the canvas is being used. I assume it's just an early WIP that will eventually use the entire canvas, but if it isn't, you can save a lot of memory and get increased rendering speed by using a much smaller map canvas.
The assets in the Low Res Add-Ons are 140 dpi. Please know that if you export a 200 dpi map, it will be pixellated. Ideally, you should set the map resolution to 140 or less, and not intend to print the resulting map.
I left your settings as they were, though, and was able to export the map without a hitch. I'll email it to you. It took under 9 seconds, and the resulting PNG file is 3.9 MB. I then exported it to JPG, which came out at only 2.1 MB, but there are visible compression artifacts, making it less than ideal compared to the PNG.
Worth noting: I had only those 6 Add-Ons enabled. Do you have a lot of Add-Ons enabled that you won't make use of on this map? If so, move them to the "Disabled Add-Ons" folder.