OK, I updated to 1.2.1, and yes the file does read that now.
However, I still have the same error under the CB Paid Subscriptions Plugin, as well as the tools > Check Community Builder User Fields Database.
After researching the update, I see that this update is mainly to integrate Kunena, which I do have installed. Could this be calling a conflict? i tried unpublishing it, but it doesn't help. I can uninstall if you think that might help...
You mentioned to check if the class is being called elsewhere, can you detail how to check this?
I'm currently using cbsubs 1.0. Will upgrading to 1.0.1 help?