I use Viper's Video Quicktags (network activated). When I have Secure WP enabled (on the main blog only at this point) and I go to the post editor (add new or edit), text will not show up in the editor window and the editor buttons will not render completely.
If I disable Secure WP, the editor page renders just fine.
Just wondering if anyone has any insight? It's possible that the conflict is not with Viper's Quicktag plugin.. I'm just postulating it is because of how it adds a number of buttons to the editor.