I get the following error when saving settings for rtPanel
Warning: version_compare() expects parameter 2 to be string, array given in /var/sites/d/mysite.co.uk/public_html/wp-content/themes/rtpanel/admin/lib/rtp-admin-functions.php on line 635
Warning: Cannot modify header information - headers already sent by (output started at /var/sites/d/mysite.co.uk/public_html/wp-content/themes/rtpanel/admin/lib/rtp-admin-functions.php:635) in /var/sites/d/mysite.co.uk/public_html/wp-includes/pluggable.php on line 881
The settings do actual save but I have to hit the back button to get out of the error page.
Is there a fix for this?