Rocketdock Minimized Windows

I'm using Vista Home Basic 32bit with the Windows Vista Standard theme and I've just installed Rocketdock. When I minimize windows to the dock, they go there and sit there and can be opened again just fine, but the previews of these minimized windows are absent or invisible. Right clicking on these invisible spaces does not give me any options to change the icon. When I change themes to the Windows Vista Basic theme in the window customization options, it works just fine.

Is there any way to get Rocketdock to give me this functionality when I'm using the Standard theme? I can't even figure out how to contact the PunkLab people for help!

Right click the dock and go to dock settings and click on the Forums button.Hope this helps if not I'll search around for you