Wonder what's different between our two tests (and environments). Are you running Mojave in your test environment? Launching after running the installer? (...as opposed to running directly from Xcode)
I'm not connected to my AxeFX III.
I launch FracTool and drag the *.syx from Finder to the magnifying glass icon.
I see the preset load.
I choose any of the export options from the menu (CSV, PDF, XML, HTML).
I accept the default file name and click save.
Crash.
I've been in your situation before, so I completely if you don't want to investigate any further at this time.
Thanks.