Skin buttons spread out on HTML5 output and not SWF output

Hello,

when exporting a captivate project as HTML5, we have the playbar not included in the skin. When playing back the project, the buttons are spread out across the bottom of the window.

When viewing a swf output the skin buttons show correctly. Again, we don't include the playbar in our skin configuration.

Anyone know why the buttons are spread out on the HTML5 output?

Thank you - Matt