When I right click on a image file and select xnviewmp to open it I get the a.m. error message ("file not found")
But if I start xnviewmp, browse to the folder and selet the image, it's properly shown in the program
Last, if I set xnviewmp as default viewer and doubleclick the image file I get always the same error message

Tested on two different computer with same o.s.
What can I do?
p.s.
how can I make a search in the forun for the word "not"?
if I write "file not found" it searches for "+file -found"
