So I installed some mods that were police car mods and I wanted them to spawn in traffic and get chased by them. The problem is that when I edited the popgroups file and removed police3 and added my cars (FCPD,FCPD2,FCPD3,FCPD4 and policefug2) the game now has no traffic. The only cars that spawn are IVPack cars and dlc cars from my added traffic mod and the dlc cars just spawn in the middle of the road, empty. After 1-10 minutes the game crashes and I cannot figure out why. There isn't an error message when it crashes, it just freezes and closes. I have to completely reset every game file and redownload the game from steam to get everything back to normal. Can anyone help me resolve this issue and get my police cars spawning in as well? many thanks to anyone who is willing to help!