Jens5395
Jens5395
Once I figured out that I needed to open a second terminal window to run the ldd command, things went according to plan :) 
I see a number of 'not found' lines .... doesn't an appimage carry all of it's dependencies and files within the appimage file ?
For anyone that reads this thread, doing sudo apt install libxcb-xinerama0 fixed the issue. Thank you Mark !