I have updated the examples for the NXTBee on the files page. These updates include timing so the screen shows the correct text and updating it to work with the 2.12 version of the block. If you have any issues with the newest update, please let me know!
Next, I am planning to update a revision to the NXTBee block in the coming week. It will likely be around version 2.20. This update adds a timeout to both sending and receiving. Sending will try 10 times to send and if it does not hear back form the other NXT, it will stop. Receiving will listen for 20 ms before it times out. This should make it so the software is easier to use. If you are interested in testing this, please leave a comment or email me.