I just bought and downloaded KartSim for rFactor2. However, the only karts available to me are the Rental Karts. (All 3 tracks are available however.) When Steam workshop syncs, I get the following message: "KS_X30_2018 v 1.13 requires unknown base mod to be installed. / KS_X30_2018 1.13". I have tried verifying all rFactor files on Steam and everything else in rFactor seems to be ok, but I get this message every time that I start rFactor2 and the X30 Karts are missing. Can anyone help me out in getting all components of KartSim installed properly? Thanks!