@TreeCutter Advanced Machines isn't compatible with IC2 1.64 yet! I'm also not sure about about the BuildCraft version you've got, or forestry for that matter? I don't use forestry so not sure but am sure I caught an error between IC2 and forestry caused by Forge or some such.
I think you also need to update ModLoaderMP.
You could try looking into ID_resolver, but it is a little awkward to use and may also produce conflicts or errors with other mods lol! But it can give you a full list of block ID's and how many are free.