Whoops. Again. My track record is going downhill fast…
The previous build crashes on server startup.

Additionally, I realized when doing my 1.7.2 update that I’d not actually registered the names for things properly. That’s done now.
In order to keep a save from 1.6.4 on 1.7.2 you will need to run that save on this version of Mystcraft first!

To recap: there is only one download (found at the bottom of this post); This file is the universal install for client and server; it no longer goes in the jar.
Mystcraft goes in the mods folder.

If you are still lost on the 0.10 series, check out Direwolf20′s Mod Spotlight! Direwolf20′s Mod Spotlight for 0.10.4.00
If you are having trouble with writing, check out Direwolf20′s Writing tutorial!
Note that there are a couple changes between the video and the current mod, particularly that colors and things are easier to write. If you follow the tutorial, you’ll do great.

Download: [1.6.4] Mystcraft Universal 0.10.13.01
Download: [1.6.4] Mystcraft API 0.10.13.01
Check the Mystcraft Forums for updates and the change log.

Enjoy!