Yes, Mozilla blocks Firefox extensions from running on its own pages for security reasons. It will work in Chrome, but not Firefox.

You're likely trying to install it in Firefox rather than Zotero. See the installation instructions.

A suggested feature. I use Feed Reader in Firefox and the most convenient thing about it is that it finds all the RSS feeds on the current page for you, and allows you to select the folder you want to

2. Open this PDF file in a web browser and add it to Zotero with the connector button, which shows a PDF icon. (I used Firefox for this.)

@Klemens_: If it still happens with other extensions disabled, we'd want a Report ID after it happens. This would be some sort of problem in your Firefox profile, not a general problem.

Not a general issue (e.g. works fine for me in Firefox).

Firefox connector is misbehaving unfortunatly. I waited some months because i hoped that an update will help but nothing happend, so I am asking here vor help.

I confirm seeing almost always the same behaviour as described above with papers from arxiv.org. I also tested it with a new, empty, profile but the outcome was the same. Firefox 81.0.2 and zotero 5.0

Do you know how to find the Firefox and the Zotero dictionary files on a Mac?

As mentioned in the bookmarklet documentation

I would like to advocate for one file per snapshot for many of the reasons mentioned by @Arjan. I have avoided Zotero's snapshot feature because it creates many dozens of files per snapshot and that's

Which Firefox recognizes (as it should) as "Library Catalog (PICA)"

@adamsmith: Where are you seeing this? I'm only seeing the COinS translator for the above SUDOC pages, and it doesn't put a Type line in Extra. (I can't even load the above pages in Firefox due to an

I restarted firefox and installed an update to Zotero prior to trying again so this debug ID is after I did both of those updates/restarts

Unclear what you've actually tried -- does that include a new Firefox profile?

Check these steps: https://www.zotero.org/support/kb/no_toolbar_button#firefox

When I add the Zotero Connector to Firefox 81.0.1 (64-bit), it appears in the Firefox Add-Ons Manager but does not show up in the toolbar for use . What would cauase that?

Firefox 81.0.1 (64-bit); Zotero Connector 5.0.75beta2; Zotero 5.0.91-beta.9+479f01fa9; Windows 10 Home, v2004.

Firefox 81.0.1 (64-bit); Zotero Connector 5.0.75beta2; Zotero 5.0.91-beta.9+479f01fa9; Windows 10 Home, v2004.

* Firefox 81.0.1 (64-bit) [debug info says v78.0, which is incorrect]