DRAFTSIGHT 2025. Command line

I have just installed  2025 on my new laptop. Licenced with cleverbridge.  Done this lots of times.

Everything appears to have installed ok. 

The short cut opens the software- Great

If I open a known dwg file through the draftsight software , it opens- Great

If though I find a file , double click to open, or right click open with draftsight nothing happens. No crash no notifications?

On windows I set the default app for .dwg to draftsight, (made it default).

Now when I double click the dwg file a window appears with the below window.

No matter what I do now, nothing happens- help please?