Hi,sorry have been busy these days.
Tried register in default WP theme, issue still occurs.
Got some spam registrations these days, just fyi if this info helps locating the problem.
I have the same problem.
I already added
define( ‘WP-CACHE’, true );
define(‘WPCACHEHOME’, ‘/var/www/snorkeluk/wp-content/plugins/wp-super-cache/’);
I also tried to reinstall it after deactivate it and delete it.
does not seem to fix it.
The version is 2.1.12.
and Yes, it does occur when only UM is activated.
However, I just saw UM has new update and I updated it to 2.1.13, and the problem is apparently fixed.
Nice uddate.
thanks for the effort.