Mounting Firefox 1.5

I've upgraded to Firefox 1.5 replacing an earlier version of the program.
Now I can't mount the Firefox browser that I installed.

When I try to load Firefox, "The application Firefox unexpectedly quit."
notice pops up.

I'm using MacOS 10.1.5 on a Power Macintosh G3 and have a DSL connection
through EarthLink.

I'm looking for steps to correct this or a resource that might be useful so
that I again can use Firefox.

Everything was going great until I made the Firefox upgrade effort.  :-(

Richard Peterson
[email protected]