Error compiling web app on Mac

Tried to run a small test app that Paul L. created a webinar for and when I try to run it I get the following error:

Can’t find a type with this name - Paython3XojoClass

I do have a plugin called Python3Scrip.xojo_pluin and also one called PaythonScript.xojo_plugin. Do I need to instantiate the class from one of these in the Open event of the app?

Never mind. It’s an enhugar class and if I remove it and restart XOJO, apps runs fine.