We made a sandbox site to test this issue, and installed the latest version of Quark from your downloads section just now, and installed that.
The front-end editing feature is absolutely horrible, absolutely broken on the Template's side. You can see this by going to the TESTING ARTICLE url that we shared in the credentials box.
When we get to this URL, (the testing article), and login using the menu option, and then click "Edit" on the article icon-bar (print/email/edit/etc) , either
1) The screen freezes or
2) The screen goes completely blank
But we get absolutely nothing else.
*Most IMPORTANT
Since this is a sandbox site, we request that you log everything you do to fix this problem, so we can implement the changes on our sites. We are not allowed by contract to give out admin login credentials to any 3rd party, and so we require that all modifications to code in the sandbox site be duplicated by ourselves. Thank you for your undestanding and time to describe how you fix this.