Video Preview Always Shows Error

Whenever you add a url in the "Paste Video URL Here" field and hit "preview" it always says "There has been an error processing your request". Posting it never shows the video. No modifications have been made to the plugin files except for changing the picture used for the icons.

Also when you add a photo, it successfully adds the photo, but it says "Failed" next to the file name which is confusing to the user.

I made you a test account to show the behavior here:
User: *****
PW: *****

[ ***** Edited for security concern ]