I found out something odd: for some reason doing some traffic stops near the sandy shores on the highway the bike I was stoping couldnt find a spot to stop, its just driven to the sand far enough and then lspdfr crashed
Im not quite understand how to install it in the singleplayer. I guess the FiveM Ready doesnt mean its incompatible with singleplayer, but there is no "vehicles.awc" file inside. I wonder where do I put the files. Do I simply switch the "RESIDENT.rpf" file?