WordPress3.9 N OT working

I just updated CU3ER to .78 because the author said it as 100% compatible with WP3.9 and now I have NO IMAGES at all! What the heck?? Does it or does it not work with WP3.9? How do I roll back to a version it was indeed working???

https://ww.wp.xz.cn/plugins/wpcu3er/