Warning: preg_match() [function.preg-match]: Unknown modifier

I have an image field (used in a vew's slideshow) that has both Alt and Title enabled.

If the user enters the @ symbol into either of those fields the following preg_match error/warning is displayed above the slideshow:

Warning: preg_match() [function.preg-match]: Unknown modifier '"' in template_preprocess_views_slideshow_galleria_main_frame() (line 23 of C:\acquia\sites\all\modules\contrib\views_slideshow_galleria\views_slideshow_galleria.theme.inc).