Class flow showed in the tool bar on 2.3, but went away when I went to 2.4. Running Mavericks on a Mac Book Pro
Have you made sure that you’re running the Professional version with the license key entered?
You can check if ActivInspire is using the personal or profession by launching the software and clicking on ActivInspire>About ActivInspire.
If you are using the professional edition of ActivInspire and the Classflow icon is still missing, please contact Promethean Technical Support directly to assist with this issue.
(Support Case 00521482)