Videowall not loading

When trying to load Videowall I keep getting the message that there is a theme missing. It says it will apply the Offroad theme and I don’t think I have that. I do have both Rapidweaver 7 and 8 loaded on my computer because I have some older sites done in 7.

this also applies to the add ons for YouTube and Vimeo.

I know this was discussed earlier but what is the answer.