Dynamic Dropdowns JavaScript error

Running Adobe Dreamweaver CC 19.0.1 11212 on MacOS.

I'm trying to following the Dynamic Dropdowns with Data Bridge 2.0 Web development tutorial. Seems to be fairly straight forward and a different approach than the old way of creating dynamic dropdowns.

However, I'm stuck on one of the final steps, being Add Ajax Functionality. I get a fair way with this particular step, but when it comes time to create the behaviour to 'Load Plugin to Div' it responds with a JavaScript error (attached).

Dreamweaver is up to date, but I've tried reinstalling the extensions and emptying my cache to no effect.

Do you think this might be an issue with the extension? Anything else I can try?

Note that I also gave the tutorial files a shot. No difference.

Any chance you can provide me with the code that it should be creating?

I'd like to debug this with you and get it fixed. Have you tried clearing your local Dreamweaver winfilecache.dat file? Please post a US phone number and I'll call you to do screen sharing and fix this with you.

Sorry, Ray. Australian. Skype? FYI, I had cleared my local WinFileCache file. Edit: meant MacFileCache file. I'm on MacOS of course.

Skype is good.

Ready when you are, Ray.

I think I found the problem. Please reinstall the extension and let me know if you still have this issue.

Problem solved, Ray. Thanks for dealing with that.