[Lowfer] Argo noob

[Robert Nickels]

I've listened to LW for a long time but never tried Argo til recently.  
Being 100 miles from Chicago I copy SIW and WM well, even during the 
daylight hours:  https://i.imgur.com/gmZPbgv.png

But last night I tried setting Argo to capture screens by specifying an 
interval and selecting JPEG file type.  This morning a number of screens 
were stored but all were just the outline of Argo, the waterfall area 
was completely blank: https://i.imgur.com/TfIWGd1.png

Does jpeg work or maybe there's something else I should configure?

Thanks and 73,

Bob W9RAN