This is most likely a TimThumb permissions error.
Go to the Justified Image Grid settings, TimThumb & CDN tab. Click check permissions then click 0755 or 0777 to see if that works (or do it manually via FTP, on the files and folders it lists there in case chmod fails). You can disable TimThumb with the 'Use TimThumb' setting and the option 'No'.
Also read the troubleshooting guide in the documentation on what else to do, especially if you are using Hostgator!
If you are using a Better WP Security plug-in go to the Better WP Security settings, System Tweaks, Filter Suspicious Query Strings: Disable
Tip: Install the official WP plugin 'Jetpack' by Automattic and enable 'Photon'. Jetpack enables you to connect your blog to a WordPress.com account to use the powerful features normally only available to WordPress.com users. It's an excellent TimThumb alternative and will make your images load faster. Note that you won't be able to use special effects due to cross-domain security limitations. Read more at: jetpack.me
Contact Our Event Management Team
We can help answer a variety of questions to provide you with all the information you need to make the right choice for your event.
High Impact Magic Designed for Small Stages and Quick Set Up
with amazing Calgary & Edmonton based magicians
Length: 10 – 90 minutes
Magic Biography – Featured Magcian
A wonderful mix of comedy, carnival stunts, and amazing magical acts. You can expect lots of audience participation in these one-of-a-kind performers, with shows designed to thrills you with impossible magic you won’t soon forget.
★ Visual Illusions
★ Escapology
★ Audience Participation
★ Slight of Hand
★ Carnival Stunts
★ Comedy
★ and More
– Greg Schmidt, Provincial Coordinator for SADD Alberta
– Megan Hurwitt, Events Coordinator for Toyota
– Amanda Verge, Events Coordinator for Hines