I use Zotero, a “free, easy-to-use tool to help you collect, organize, annotate, cite, and share research” (from their website). Zotero is based on Firefox and users can install addons from XPI files. I looking to install a DOM-Inspector to Zotero and I subsequently found zotero-inspector on Github. Upon going to the releases page, I clicked on the xpi file only to see an alert pop up in Firefox:

Upon going to the releases page, I clicked on the xpi file only to see an alert pop up in Firefox:

“The add-on downloaded from this site could not be installed because it appears to be corrupt.”

I… don’t know if this should be allowed. It just feels wrong.