Does the extension show up as Enabled or Disabled on the Add-ons page after restart (the little slider switch next to its name)?

By the way, it's not difficult to get an extension signed manually (through the interactive form on the Add-ons site). At the first step, you choose private distribution instead of distribution on the site. I think it is worth testing whether getting it signed makes any difference. Probably not, but worth a try. More info: https://extensionworkshop.com/documentation/publish/submitting-an-add-on/

@jscher2000

The add-on is enabled.

Another item I forgot to mention is that in the "about:debugging" when I inspect our add-on, this appears "Error: can't find profile directory." - "XULStore.jsm:66:15". Not 100% sure if this is related. I am seeing other posts saying that this is affecting extensions. This error seems to appear for other extensions and with or without my extension installed.

As far as signing, our network is a classified network, and in order to get items transferred from public networks to it, is not a trivial matter. So if I can keep the extension development and installation all within our closed network, that would be best.

Thanks for your input!

Did you check the Browser Console for messages about this extension ?

• "3-bar" menu button or Tools -> Web Developer
• https://developer.mozilla.org/en-US/Tools/Browser_Console

@cor-el

The Browser Console is where I am seeing the "Error: Can't find profile Directory" error. That error is listing XULStore.jsm:66:15 as the source.

I do not see any other errors in the console that point directly to the addon we're having problems with.

Thanks

Chris