faulty open url script?

[VICH]

i have an open url step. the url is built by combining feilds like so If(IsEmpty(block);"R:2006Builders" & "" & Builder & "" & Subdivision & "No Block" & "lot " & lot & "lot specs";"R:2006Builders" & "" & Builder & "" & Subdivision & "block " & block & "lot " & lot & "lot specs")

now the open script works on most users computer. but one user nothing pops up. any suggestions as to why or what to look for?

[John Mark Osborne]

Is it possible they don't have a default web browser setup on their computer? Try creating a script with Open URL that is very simple so you can be sure it is not the URL. This will confirm if it is a problem with their default browser.