Screenshots

I'll get to the version in a minute, but this is my world. As you can see it's in client mode and damage is enabled.

The following three pictures show all the mods that I have enabled for this world.

I had them all enabled at first, then I disabled "i3" and downloaded and enabled "unified inventory".

I also decided to disable "dMobs" because I got tired of the dragons.

Then I added "anvil", and used it after I had mined enough iron to make an anvil and hammer. Right after I made the anvil, I could not harvest any more coal or iron in my mine, unless I already had iron or coal in my inventory. And once I used the ones I had in my inventory, I could not harvest anymore at all.

I tried disabling "anvil", but that didn't help the problem.

This picture shows my version and privs:

The following 3 pictures represent an example of the problem I'm having.

The first two are the coal dilemma (I didn't show it with iron, but it's the same problem), and the next two show stone, and you can see the stone works properly.

Maybe someone will find this interesting and maybe be able to explain why.

Coal node: