See the advice here: https://www.scirra.com/tutorials/1276/exporting-desktop-apps-with-node-webkit
According to your tutorial:
"On Linux, the following command enables execute permission for the file 'mygame'. Run this from the terminal to ensure the file can be run:
chmod a+x mygame"
In the Linux32 export folder, there is no file with my game name... see screen shot. So which file(s) need to be made executable?
I've made a number of the files executable but always get a "Exec format error"