[Theme: Customizr] Logo and Favicon Upload Not Working

Using the Customizr theme, I cannot get the logo and favicon to upload through the ‘Customiz’it’ options. If I click “upload” (for either one), the “open file” dialog box will come up, but after I select the PNG file I want to use, nothing happens. It does appear that the PNG gets uploaded to my \uploads\ folder in the background, but the “saved” button never updates to “Save & Publish”, nor do any other changes occur showing that the image was uploaded (and, of course, it does not show up on my webpage: http://www.livelussovita.com/shop ).

I have verified that all directory and sub-directory permissions are set at 755. From a forum search, it appears that several other people have reported a similar issue but I cannot find any solutions or workarounds available.

I’d appreciate any help or suggestions. Thanks in advance!