Max Rice

Try this in your functions.php:

add_filter( 'woocommerce_bacs_fields', 'wc_tweak_bacs_sort_code_label' );

function wc_tweak_bacs_sort_code_label( $fields ) {

	$fields['sort_code'] = 'Branch Code';

	return $fields;
}

Pack Tables are supported in this new WooCommerce UPS extension I wrote ??

@mpfefferle – what other plugins do you have installed? They might be conflicting.

PHP has a bug in all versions up to 5.3.11, on windows, that crashes itself if a file is 4096 bytes or any multiple of that. woocommerce-core-functions.php is currently 28672 bytes, which causes this error when activating. See PHP Bug #61166

you can fix this by adding a blank line anywhere in the file woocommerce-core-functions.php