Running Microthemer on a site using SSL and ran into issues with Google Fonts. When attempting to change the font to a Google font, I’d select Google Font from the drop down list. A popup window would appear as normal, only it would be void of any fonts.
After a little digging, it looks like non-SSL urls are hard coded into a few files within the plugin. The file names are as follows:
Removing the http: and just leaving behind the // solved the problem. But thought I’d let you guys know.