The configuration compatibility version changed in this hotfix. It was supposed to change when 1.10 was released so applications could identify when the configuration needed to be updated. This was missed. Configuration compatibility along with the previous schema compatibility version are part of the ongoing work we are doing to help with upgrade automation.
There will be a python script posted here today to update the config version so you don't have to modify JSON directly but if you want to get started...
Your g2config.json contains a section like:
Change the CONFIG_VERSION to a 3. That change should have been paired with the updates with the original 1.10 but was missed.
No schema changes