Hi Ivan, no, I do not have this check box marked. I did note, that it was mentioned previously, so I've checked, but the check box is un-marked. The strange thing is, that the icons of the *.jsl files, when viewed from Explorer, is dissimilar from the icon seen from inside JMP. I do not quite remember, but I thing the icon is the that for an JMP-addin. It would make sense then that JMP starts the application immediately.
Another post recommends to reset ALL associations, but I have not tried that yet.
Thanks for the answer.
Poul Ravn Sørensen