Windows plugin works with FF on trunk, but not FF released

Hi All,

This is my first post to this list.

I have an FF on Windows plugin that works in both 3.x and 5.x.  I have a
dual build config.

The 5.x plugin will load and work fine from the FF source I pulled down an
built myself, but it won't load and work with the standard FF 5.x release.

I initially pulled down the entire FF source tree to debug why my plugin was
not loading, only to find that with my home built source, the plugin does
load.  So I'm still stuck.

about:plugins shows my plugin, but I assume that's only because the code for
about:plugins just looks at the version info.

When using FF 5.x release, my plugin DLL never gets loaded when the MIME
type for my plugin is parsed, therefore NP_Initialize never gets called.

But, like I stated, when I open the same HTML page in FF 5.x debug, my
plugin DLL is loaded and NP_Initialize is called.

Anyone else ever run into this?

Thanks,

Mike