Hi PaulDoes the project play correctly in CrazyTalk before you output to video? If so then you may have a technical issue that needs resolving.
First thing I would advise is that you make sure your graphics drivers are updated to the latest available. This kind of problem is often graphics related.
If that doesn't help then please contact Reallusion Technical Support using the link below. They will be able to help you diagnose the problem.
http://www.reallusion.com/CustomerSupport/User/QForm.aspx
Hope you get this resolved soon.