CEL/URL errors using Firefox 3.0

[BobHegwood]

Just curious here...
I cannot get Firefox 3.0 to process CEL:URL's correctly. When I try to follow one of these references, I get the following error message:
Celestia Command Line Error
which then causes an error box to popup which displays another message which states:
Invalid command line option followed by the actual CEL:URL as typed.

If I use the Internet Explorer from Microsoft, I do NOT see these problems. Anyone have any ideas here?
Thanks, Bob