See forum post at http://thaumcraft.duckdns.org/forum/viewtopic.php?f=6&t=12
Thanks to blood we can now play the latest Thaumcraft version again on our glorious potato! If you don’t have the latest Thaumcraft yet see the What you need page for the download page of Thaumcraft.
Also, you will need to download a new version of forge which is also detailed on the what you need page
There is a bug in cauldron where you cant sleep above y 128. Sorry about that but I cant help it. If you wish to sleep you need to be below y 128. Also trees might be slow in growing, but apparently that is fixed in this version of cauldron.
Anyways, as usual, have fun!