I am unable to preview or publish (HTML) responsive Captivate v11.5.1 projects. I am using Windows 10 and tried all browsers with no luck. Additionally, I have cleared Captivate's cache and rebooted.
Any reason why you did not update to 126.96.36.1993?
Did you clean the Preferences?
Yes, upgraded and cleaned Preferences. Still no dice.
There may be a conflict with another application on your system, or a dll file which has been corrupted by some update. Do you run Captivate with 'Run as Administrator' feature?