How to correct D6200 returns Communication Failed by Error when connecting to the receiver.

Why does the D6200 software show "Communication Failed by Error" when trying to send files to a D6100 or D6600 receiver?

This error will occur if the D6200 is set for the wrong environment option.  In the D6200 software, browse to Administration | Environment Option and select the correct Mode.  The options are D6600 or D6100.  Click OK to save the change.