The plugin is installed correctly into moodle. the courses are there on the webserver. they will not launch. anyone else having this problem?

Are you using 1.9.5?  The plug-in is broken for that version of Moodle.  We're working on a fix right now, and hope to have it out in the next few days.  It's our number one priority at the moment.

The Udutu plug-in for Moodle version 1.9.5 or newer is fixed.  It can be found at:

http://www.myudutu.com/downloads/moodle/v1_95/udutu.zip