After finishing step 8 (adding City Processor)
I got an error. Not sure who is this hardcoded williamc, even if he uses Unix same as me (I use Linux).
Error Invalid source /obj/geo1/processor1/ROAD_GEOM_filecache/file_mode.(Warning: Could not create directory '/home/williamc/Downloads/geo'.Error: Unable to write to file "/home/williamc/Downloads/geo/file_uses.filecache1.1.bgeo.sc".).