On a Mac you should be able to use the menu item Moneydance --> About Moneydance. Or you could open the console window and look at the first few lines. Or you could have a look in the Error Log again at the first few lines.
However, the 2019 version of the program is imminent. Infinite Kind have already shown screen grabs of the latest version on FaceBook, which for Mac Users includes a new Dark Mode as featured in Mac OS Mojave. So watch the link above!