EditorX license not working after updating Runner

In the process of trying to work around a problem with long enums here, I tried updating the Runner package to the latest 1.11.0.
After doing this, I can no longer run EditorX 1.6.1 under a Community Edition license.
I always get the following error:

Reverting Runner back to 1.8.3 allows me to run again.

Thanks,
Wittrock