I am having trouble previewing "from this slide" in captivate 9. I have been able to previously with no issue. Now that I have started a new project, it will not allow me to preview.

Is this a normal or a responsive project? If it is a responsive project, which browser is set as the default browser? Did you upgrade that browser recently?

If it is not a Preview that uses the browser, but uses a temporary SWF, maybe cleaning the Preferences will be necessary. But that means that you lose all customisation, not sure if you are ready for that?