its sometimes happens when you install it wrong some collision wont load (for you its streets, for pod its lamps) (i had that once too some streets at LS&LV wasn't loading collision. its bug)
to get it fully working you need to install it on cleen gta3.img with IMG Manager (Edit > Bulk Replace (Ctrl+B))
i tested it and its works perfect for me
i suggest you to install it on cleen gta3.img using IMG Manager. or i can upload tomorrow gta3.img with no mods only "no shadows" installed