JK crashes when I try to join a session

[drsteve744@gmail.com]

I am a newbie, just trying to get up and running - I can get right through the Audio Gear setup, and can hear my Voc and my Guitar through the headset with all latency factors in the Green.

When I try to join a session, the program just disappears - it crashes. 

I am on Windows 10, more than adequately meeting the requirements. Using my Behringer X Air 18 as my interface.

Any thoughts or solutions? I would really appreciate the help
Steve