"Configuration error. Please contact your network operator or service centre." That means that You chose wrong customization pack, or You did not customize Your phone.
But I'm not sure if that 2 files are correct. I'm using K750_R1CA021_MAIN_EU_1_CL_RED49
K750_R1CA021_FS_EMEA_1_RED49
edit: Your 2 file shoud work fine together.
EMEA4 have different languages than EMEA1, that's all :)