Windows .exe Unable to join private server

[To_The_Rescue]

Hey,

I have run into another problem.
I have been trying to join a private Mindcrack server that I am running. The server is running fine. But I am not able to join it as I apparently do not have the necessary mods needed to join. I am using Mindcrack, and the server is a Mindcrack server. I am able to play in single player without problems, and I have not added any other extra mods on to either the client or the server. I have also updated my game, and restated my computer to see if that would make a difference. However, the issue persists.
Any help would be awesome!

 

[To_The_Rescue]

Some how I managed to fix it... I really don't know what I did. But it works now.