Mar 182013
 
Error type: "Bad Request". Error message: "Bad Request" Domain: "usageLimits". Reason: "keyInvalid".

Did you added your own Google API key? Look at the help.

Check in YouTube if the id UCrb7cFjxI74_St3G6phxQ4Q belongs to a username. Check the FAQ of the plugin or send error messages to support.
Error: Neither the "cid" nor the "vid" was passed to the ustream tag!

Live video by Ustream