Simple cars plug in help

My server installed the simple cars and it gives a whole list (in red in the chat window) of error messages. We uninstalled it thinking there was a big problem with it. The cars worked fine, other than our characters not quite staying in the car, we just had the error messages coming up every minute or so. Did we need to uninstalled it? Or can we put it back on the server and just ignore the messages? Or maybe we should do something to make the errors go away? I am not a computer guru and also am not the server host in our group but we really need to know if something is wrong on our end or what... we are new to the whole lua and scripts thing.