Bon si on remet son client en 1.2 on peut continuer d'utiliser le serveur,
voici la manip que j'ai suivi:
Minecraft 1.2_02 and old launcher Downloads
The world has been reverted back to Minecraft Beta 1.2 which requires you to use an older client. We'll be running this version until everything is fixed
Here's how:
1: Download Client: http://www.shadownet-online.com/Downloads/minecraft.zip
2: Run minecraft beta as normal to update to the latest client.
3: Uncheck "remember my password", login.
4: Quit.
5: replace beta minecraft.jar in your appdata\.minecraft\bin folder. Copy the paths below if you can't find the folder.
- Windows 7/Shista: C:\%APPDATA%\.minecraft\bin
- Windows XP: C:\%APPDATA%\roaming\.minecraft\bin
- MAC (replace your name with your name): /Users/(yourname)/Library/Application Support/minecraft/bin
6: Run Minecraft again and connect as normal. Leave remember my password unchecked.
You can conirm which version you're running by looking at the top left of the minecraft window.