Opticraft Community

Just noticed 1.4.6 has been released.

[spoiler=Update list]* Added fireworks * Added enchantable books * A lot of enchantments have been tweaked * A Christmas surprise * Added option to enable touchscreen input for buttons and inventory * Many issues have been fixed![/spoiler]

DO NOT UPDATE until Optical has confirmed that the server is compatible.

Note: If you do want to update, keep a back up of your minecraft.jar (Or even your whole .minecraft).

If you are stupid like me and did the update, 
you can always use this :
http://www.minecraftforum.net/topic/746856-minecraft-version-changer-11-really-easy-to-use/
to downgrade again.