You upgraded to Minecraft 1.9 and now you can’t log on to Towncraft or any other Minecraft Servers! What can you do to get back onto your favorite servers?
Simple: Set up a profile for your old 1.8 servers.
Step 1: Click New Profile
Step 2: Give it a name, then select your version. You probably want 1.8.9 to get on to your Minecraft servers.
Then just use this profile whenever you want to play on your favorite Minecraft servers like Towncraft until they can update to 1.9.