This is working with limited success.
The error message is: "Sorry, Registration is enabled, free registrations are not allowed, but no subscription plan is available for registration. Please contact site administrator."
I found the sentence "Registration is enabled, free registrations are not allowed, but no subscription plan is available for registration" and changed it to "free registrations are not allowed, please select a membership plan." This works, but leaves the "Sorry," and the "Please contact site administrator."
Then I searched and found "Sorry, %s. Please contact site administrator" and changed it to "Sorry, %s." This does NOT work. The "Please contact site administrator" is still showing.
I am changing the wording after the "=>", by the way.
Any suggestions?