Hi ProudAussie and welcome to our community
Sometimes this happens when you record web based
applications. Captivate is running on your PC and is very quick to
grab a screen when you click. And sometimes, the screen it grabs
hasn't had time to be totally filled with content, as it's being
shipped from the server.
You need to listen for the camera shutter sound. When you
begin noticing that the process seems to fail at certain spots,
supplement the automatic recording with additional screen captures
by pressing the Print Screen key.
Keep in mind that it's always way easier to delete what you
don't need than it is to add in what was missed.
Cheers... Rick