PopUP Pro Will Not Save Display Animation setting (Prepop)

Absolutely love this plugin!!!

Recently, ran into an issue when editing a popup, not sure when this started, but the plugin will now not save the setting for "Popup display animation". "Popup close animation" works fine, it's just the "Popup display animation" that won't save.

Version: 4.7.0.7
WP Version: 4.2.2
WP Type: Multisite
Activation: Specific site (not network wide)

Let me know what other information or access I can provide to help figure this out.

Thanks!

Art Smith
Ambrosia Web Technology