I thought i would just discuss this since it's a bit of a problem for 90% of us on the server. This is obviously ultimately up to you broonie but apparently there are ways to regen just the nodes without resetting the nodes on specific coords.



“Adding Thaumcaft world generation to existing worlds

Yes, you heard that right. You can add all the ores, trees and other worldgen features to existing worlds by changing a few things in your config files. Remember: this could be risky so always backup your saves beforehand.

If this is the first time loading Thaumcraft with that save, you can leave the regen_key setting as 'DEFAULT' otherwise set it to anything else.
You need to choose what to regenerate. I strongly recommend you set aura_nodes to 'true' if this is the first time you are doing this. Without the aura you won't be able to do 99.9% of the things you could in Thaumcraft.
Run the game. It will lag for a while and you should see some console spam about chunks being regenerated. This is fine - just wait it out. It shouldn't take too long. If the world had been explored a lot you might see the message reappear every now and again. This is also normal.
If, for some reason, you wish to do this again or somehow your savefile got corrupted and your aura nodes have gone missing, all you need to do is set the regen_key value to something else. Any word would do.


Specifically that last part. There is also deleting the Aura.dat and allowing it to regen the file. Just a thought though.

Also this. http://forum.feed-the-beast.com/threads/thaumcraft-3-goggles-not-working-for-me.5718/