After much frustration with the unknown error during submodule update I finally tracked it to the pyffi index data. I'm unsure what caused the error but removing the kfmxml submodule and purging all references to it then re-adding it has finally fixed it properly.
After much frustration with the unknown error during submodule update I finally tracked it to the pyffi index data. I'm unsure what caused the error but removing the kfmxml submodule and purging all references to it then re-adding it has finally fixed it properly.