Hi Sherri,
Welcome to Adobe Forums.
Sorry about the inconvenience.
Please let me know about some information and try some steps:
1) Which OS?
2) Is this happening in all the projects?
3) Try with a new blank project.
4) If you have Windows 7 then run Captivate as an administrator and see if that helps.
5) You can also try a new user account.
Thanks
Vikas