I have the same issue and would like to know if there is already a fix?
When I click on quickview I get an empty frame. My Chrome element inspector give me the following error:
Mixed Content: The page at https://www.mysite.de/category/ was loaded over HTTPS, but requested an insecure resource http://www.mysite.de/vestempcp/quickview/view/id/4/. This request has been blocked; the content must be served over HTTPS.
Under System > Configuration > Web
I have https for both secure and unsecure url.