btw, Lauren, the latest sunrise ff extension that you posted (
https://www.mobileread.com/forums/sho...2504#post22504) is 1.5 Beta-compatible, but it will not install in 1.5 Beta 2 (and perhaps in Beta 1) versions of Firefox.
You need to edit the install.rdf file & bump up the:
<em:maxVersion>1.4</em:maxVersion> to
<em:maxVersion>1.5.0.*</em:maxVersion>
(or whatever the maxVersion of Firefox sunrise.xpi is compatible with). For example, 1.5 Beta 2 is Firefox 1.4.1, so you could just change it to 1.4.1 and it would install...but I digress.
Once you edit that file, it will install w/o error in ff 1.5B2.