Wrong Flash Client Version Error?

Reason:
In this situation, your have a higher client version or a lower server version. For example, you install 123flashcha v9.0, but you have started 123flashchat v8.2. When you access to the client panel of 123flashchat v9.0, it will auto-connect to 123flashchat v8.2 server, and this error would occur.

Solution:
Make the client side and server side version equal by using a higher version server side or a lower version client side.