Using mos2.1 with yam here and using sputnik as main browser nowadays.
But somehow I can't seem to get yam to open sputnik with the doubleclicked url in yam.
Yam opens sputnik but with nor url even clicking again doesn't work.
I also tried setting openurl to ibrowse but same story.
I did upgrade openurl to later version maybe this conflicts with version included with mos2.1?
Believe I removed all off the openurl install from the 2.1 install...
Still configuring seems to work in the menu as setting it to Ibrowse opens ibrowse etc..

I had the simular problem once. Maybe its related.

Check the configuration section "script" "double click on URL" and make sure its empty.

Geit