Hey to anyone that is having a similar issues as to mine I was able to figure out the problem, if you have add on dlc cars and add them to your agency.xml and remove a pack that is also in your agency.xml with out removing it there also, it will cause you to have the issue that I was having and all I did to fix it was, replace all the names of vehicles that were included in the pack I had removed, with vehicles I still had in the game. hope it helps anyone looking for help with this issue.