ProppFrexx ONAIR User-Forum

What does this message in the Chat-Client Setup mean and how do I fix it?

Thanks in advance for your help.

This message typically happens, if you are trying to chat with yourself. Ie. you are not using two clients.
As both are trying to encrypt the message, but there are effectively not two parties.

Message might be misleading, but as said you need two different PF instances - which is here probably not the case.