RequestPolicy/requestpolicy — Issue #168: validation-related requests by Web Developer extension blocked
Author: jsamuel
Created: 2011-12-22 05:56:35+00:00
State: open
Labels: extension

A user of the Web Developer extension reports a minor conflict:

https://addons.mozilla.org/af/firefox/addon/web-developer/reviews/261514/

If you have Web Developer *and* !RequestPolicy installed, and you want to use the Web Developer local-validation feature (where Web Developer has the W3 validate a page on your own computer's hard-drive before the page is uploaded to the web), the first time you try it, !RequestPolicy will block it.
...
So, to fix this, so that Web Developer can do its thing, right-click the !RequestPolicy red-flag icon, then under the "Blocked destinations" part, select "w3.org" and then select "Allow requests from about:blank to w3.org".

There are more details in the linked AMO comment.