There is an issue with the installer with Mindjet for Windows (v11.1.353). After installing TPAssist and launching Mindjet for Windows, you will get an error suggesting the Add-in can't be loaded. The same error occurs if in MindManager, you go to the File Menu, choose Options, then select the Add-Ins tab, and then check “TPAssist Add-in for Mindjet for Windows”, click Ok.
We are working to try and isolate the cause of the issue.
For now, the best advise we can give is to down grade your version of MindManager (i.e. version 10) and re-install TPAssist add-ins.
