Did you not get a Mac crash report when it disappeared?
Check Console.app usually under User Reports.
You could try running from the command line to see if there are any errors reported:
Open Terminal.app (from launchpad or using spotlight)
Type the following: /Applications/Gnucash.app/Contents/MacOS/Gnucash
Report back anything that looks like an error, especially just prior to the crash and the command prompt returning.
> On Jun 13, 2018, at 2:02 AM, Frank Crestejo (PAC) <[hidden email]> wrote:
> to whom it may concern.
> Just loaded the application 3.1 into a MacPro running MacOS 10.12.6 with 8GB of memory on an Intel iCore i7.
> Try running GNUCASH.APP - Loads OK, no error codes, and then the APP disappears from Dock after a few seconds and that’s it.
> Help. Or what am I doing wrong?
> Frank (Chico) Crestejo
> SKYPE= salcocn
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