I used Easy FancyBox to create an iframe on a testing server and everything worked fine. However, when I tried to recreate the iframe on our live server, Easy FancyBox doesn't work.
When I go into Settings -> Media, all of the options for FancyBox have this warning displayed:
Warning: Missing argument 1 for easy_fancybox_settings_field() in D:\Inetpub\website\wp-content\plugins\easy-fancybox\easy-fancybox.php on line 240
Line 240 is just a closing curly bracket.
This warning appears for: Global settings, Images, PDF, SWF, YouTube, Vimeo, Dailymotion, and iFrames.
I'm fairly new to WordPress and I haven't been able to find any reason why this is happening. If it matters, we are using a custom theme designed for us.