Hi Matt,
I think I did see the errors in "linux-yocto-clanton_3.8.bb do_kernel_configme". I'm not sure what error you got. The error I encountered was about tar version. I have tried tar 1.24, 1.25, 1.26 and I found that tar-1.26 is the perfect one.
You **might** also need to clean up before re-build it.
I hope this helps.
Thuy