Files are not loading in QFlash V6.9

Hi Team,

I have installed QFlash V6.9 in my laptops. Previously it was working in all laptops but after few days, out of 5, in 3 laptop QFlash is not able to load file .mbn file. Whenever i click on .mbn file in load file window, it didn’t show loaded file.
QFlash snapshot attached for both working and non-working QFlash.

Maybe it has anything to do with firewalls.
I have never seen it before.
In normal case even you didn’t select the COM port there should be seen the files.