I have PowerCAT installed as a managed solution and have upgraded this solution to the latest release previously without issue.
I have downloaded this latest release and imported it. The import reported as successfully completed and upon opening an existing app that uses these components in an editor I was presented with the expected component update prompt.
However existing and new components added to my app - even ones I have not used before - show "Error loading control" in place of the control. I have tried re-importing the solution and reloading the affected app.
I was considering removing the solution and re-adding, but im not sure what the implications of doing this would be for existing, published apps that are using the controls in this solution.