SecurityError: Permission denied to access property "document" on cross-origin object
is the only info I get when using LT in a normally working form in an IFRAME.
Which browser, which website?
Firefox, private local site. A page with several iframes. Not a big issue, just to let you know.
update browser with the latest version, after that start plug-in.
Already did that.
A few months ago I got the same error-report while trying to run a WebGL game I had downloaded due to the host site having spotty connectivity.turned out that the browser doesn't allow any web-calls from "file://".maybe that is the problem you're dealing with.
I'm not sure how this can be, but a user reported this was caused by another add-on for them. The user didn't mention which one, though.