Adobe Captivate, like most computer programs, can behave poorly. I've found that when Captivate gets sluggish on my computer or crashes, it's because I've got too many applications running and not enough resources. In that instance, closing all non-essential applications solves the problem.
However, there are times when nothing I do seems to help improve Captivate's performance (not even a system reboot). In those rare instances, I've found that resetting all of Captivate's Preferences cures what ails Captivate. One way to reset the Preferences would be to find Captivate's Preferences file on your computer, throw it away, and then restart Captivate (which creates a new Preferences file). The problem is that the Preferences file is buried within your user credentials folder and is often hard to find.
If you need to reset Captivate's Preferences, you'll appreciate an obscure utility that ships with Captivate that will reset all of the Preferences for you.
Navigate to the folder where Captivate is installed on your computer and open the utils folder.
You'll find two files of particular interest: CleanPreferencesMac and CleanPreferencesWin. Simply double-click the file appropriate for your operating system and BAM!... all of Captivate's application Preferences will be reset to the way they were the first day Captivate was installed on your computer.
For instance, in the image below I "accidentally" disabled all of my Confirmation Messages in Captivate.
Don't be jealous, but it's a well-established fact that I am the fastest clicker in the West (or the East for that matter). I could have enabled all of the Confirmation Messages in, what, 3.2 seconds. But by double-clicking CleanPreferencesWin, all of the dialog boxes were instantly reset. I'm fast, but I'm not that fast.