Winhelp Problem - RoboHelp received Word error 24 message.

I am working with a Winhelp project in Robohelp 8. I am not sure what version was used to create it. I need to fix some help jumps but I keep getting the following message: RoboHelp received Word error 24. If you continue to get this error, contact Adobe Systems for technical support." I also get the same message if I double-click on any topic.

Thanks.