Ginger requires a very specific version of Adobe Flash ActiveX Player. Even if you have a Flash Player installed for your browser, you may need to additionally install this ActiveX component.
In order to make sure that you have this version, please download and install this version of Flash.
If you are still having problems, please go here and choose the first version under Windows. (Download the Windows Flash Player 15 ActiveX control content debugger for Internet Explorer.)
After Flash is installed, restart Ginger.