Edge ring select crash

I found a bug releted to edge ring select tool. Nvil crashes when you select 2 edges, both on geometry border, push "H" to select edge ring, and there are no edges in between to select.

I couldn't produce the bug. Can you give me a specific example?

In earlier versions there is just an "unhandled exception" which allows continue (a bug since at least 2015), but with the updates Nvil now crashes with data loss. I use older version (due to other issues)

Very simple example.
Create a plane (no segments), select 2 opposite edges, "edge ring" select, Nvil crashes (System.NullReferenceException: Object reference not set to an instance of an object)

Fixed.
http://www.digitalfossils.com/Download/NVil-Apr-27-19.rar