When attempting to book a space for an event logged in using a pre-existing wordpress user account and the Allow Guest Bookings option set to "No":
-The "Error mailing user" message appears (mine is set as the default: However, there were some problems whilst sending confirmation emails to you and/or the event contact person. You may want to contact them directly and letting them know of this error.)
In addition to:
Errors: (only admins see this message)
Please supply a valid email format.
-The booking is recorded as a "non-registered user". I suspect this is why the email error occurs - because something is going awry with the user account info.
I have not deleted the user. If I change Allow guest bookings to "Yes" and book a slot not logged in as a user, the email is successful and the booking is recorded properly. Also - I don't get this error if I use the original account administrator user, but I do if I use any other user (tried subscriber and admin privileges). Both email accounts end in @gmail.com.
WP Version: 3.3.1 (fresh install to isolate error sources for this issue)
Events Manager Version: 188.8.131.52
Other Plugins: none
Em Settings (all others default):
Allow guest bookings? No
Allow double bookings? Yes