Hard to see what's going on with your mesh from just one angle. Also seems like your diffuse is darker on one side than the other. How does it look with no lighting and just the diffuse map?
The normal map is not the same across the two seams. The smaller UV shell has some light-blue at the bottom, the larger UV shell has darker blue at the top. Crazy Bump has created this problems for you, because its algorithm doesn't look at the mesh at all. To fix it, apply the normalmap in the diffuse slot, turn off…
Here's the error ... http://img440.imageshack.us/img440/5526/errorgv5.jpg This error happens also occurs in Xnormal. It first appeared after I changed the wood texture to a different one since I didn't like the original and I renormalised in CrazyBump. I changed the spec aswell. I cannot find any reason why this is…