Exception Object HTTP->HTTPS redirection in Firefox

I am seeing errors like this in Firefox 14a1:

Timestamp: 3/31/2012 2:59:38 PM Error: [Exception... "'Object HTTP->HTTPS redirection to https://www.youtube.com/v/UVrI3IyKo3E?version=3&color1=0xb1b1b1&color2=0xcfcfcf&feature=player_embedded' when calling method: [nsIContentPolicy::shouldLoad]" nsresult: "0x8057001e (NS_ERROR_XPC_JS_THREW_STRING)" location: "" data: no]

The URL where I saw this error come up is http://www.chromeosforums.net/forum/chrome-os-help/541-how-completely-wipe-cr-48-factory-reset.html.

I'm using HTTPS Everywhere 3.0 Development1. I understand using dev versions with dev versions is a recipe for errors.

Trac:
Username: geeknik