one more debug line

analyze_mts_file.lua

@@ -14,6 +14,10 @@ handle_schematics.analyze_mts_file = function( path )
 		return nil
 	end
 print('[mg_villages] Analyzing .mts file '..tostring( path..'.mts' ));
+if( not( string.byte )) then
+	print( '[mg_villages] Error: string.byte undefined.');
+	return nil;
+end
 
 	-- thanks to sfan5 for this advanced code that reads the size from schematic files
 	local read_s16 = function(fi)