Hello there,
Can you please tell which Operating system are you using ?
Close Captivate and recreate preferences. (below procedure)
Rename the preferences folder for captivate, Location for Captivate Preferences folder:
Windows 7: C:\Users\[user name]\AppData (hidden folder)\Local\Adobe\Adobe Captivate 6 folder
Windows XP: C:\Documents and Settings\[user name]\Local Settings\Application Data\Adobe\Adobe Captivate 6 folder
Mac: /Users/[user name]/Library/Preferences/Adobe Captivate 6 folder
Rename Captivate 6 to OLDCaptivate 6
Thanks.