Hi. I am using Captivate version 7 and I am having the same problem with ALL of the interactions; I cannot insert any interaction into my project without getting the "invalid widget" error. I am also not able to solve this issue by closing the file or creating a new project as suggested above.
Has anyone discovered a solution yet? I was so excited to get my new version with these interactions, and can't believe that I can't use any of them!
Thanks!