Hello,
I’ve tried to add a link in Info Box element and haven’t got any errors:
http://storage3.static.itmages.com/i/15/0521/h_1432230415_7083323_5e48ef5b43.png
Please specify what page you’re editing. Also update the theme to 1.7.1 version and update the rest of the required plugins https://www.8theme.com/download-plugins/ .
Don’t forget to create back up of your files and database before starting update process!
(it’s for Legenda theme but the process is the same).
Regards,
Eva Kemp.