CommandEventHandler not found

[dzid26]

I am trying to run Octofusion using fusionIdea

I am getting following error:

Traceback (most recent call last):
Traceback (most recent call last):
  File "C:/backup/OctoFusion/OctoFusion.py", line 7, in <module>
    from octoFusionCommand import octoFusionCommand
  File "C:\backup\OctoFusion\octoFusionCommand.py", line 16, in <module>
    from Fusion360CommandBase import Fusion360CommandBase
  File "C:\backup\OctoFusion\Fusion360CommandBase.py", line 212, in <module>
    class ExecutePreviewHandler(adsk.core.CommandEventHandler):
AttributeError: module 'adsk.core' has no attribute 'CommandEventHandler'

Do you think Autodesk changed their API somehow and this is no longer supported?