Can you post the path to the RBZ download for Floor Generator at SketchUcation.com
It's no longer available in the PluginStore, because the author has withdrawn it from publication following a spurious undisclosed 3rd-party copyright claim...
Perhaps you have an old version saved on your PC ?
Anyway it should not do what you've reported.
Have you tried clearing the Internet Explorer cache ?
It might be corrupted and messing with Webdialogs ??
Clearly the Fredo's dialogs shouldn't behave like this either !
Also try disabling the renderers and see if that is implicated...