Skin doesn't display

I'm using one of RoboHelp's default skins. When I compile my project on my home p.c., the skin appears and works just fine.

When I open the project at another site on a different p.c., the skin doesn't appear. The screen is white where the left vertical skin and the top horizontal skin should appear.

Is this some sort of Flash setting that is preventing the skin from displaying properly?

-Greg