Unfortunately it was - there was a problem with some of its files which was resulting in people being kicked from the server, and also preventing people from joining the event. Therefore I had to restart the server, and in order to prevent the issue from reoccurring I re-created the vMod, omitting the BES GT-R so that nobody could select the car (accidentally, or without knowing the problems it was causing). I'm not sure if it was simply a coincidence that the issue begun following the introduction of the BOP GT-R (a couple of races ago), or if there is a conflict occurring between these two vehicles which means that only one can be used at a time. For the next event I shall remove the BOP GT-R and reinstate the BES GT-R, with the hope that the issue is due to both mods being used together and will not occur again. Apologies again for the inconvenience yesterday.