Running Mozilla

Hi, probably something very simple, but I just don't see it. I just installed Mozilla 0.9.9, but when I start it: ~> /opt/mozilla/run-mozilla.sh I get this message: run-mozilla.sh: Cannot execute . I get the same message after su'ing to root first, or after experimenting with permissions. However! If I cd to /opt/mozilla (as user) and then execute ./run-mozilla.sh then Mozilla does start. What am I missing? The point is that I can't get a desktop icon working, because /opt/mozilla/run-mozilla.sh cannot be executed from it. TIA, SH