In the following link, you can find the props folder that I found at GameData/AKI/ModifiedIVA, and it contains a copy of my ksp.log file, where I made one single flight with a craft named 'JoolJet'. (which ended in a crash btw.) https://www.dropbox.com/s/37f6gp07p2dihby/props%20and%20log.rar?dl=0 -------- FIXED IT! you had the right guess. It says model = ASET_Props_1.0.2/ASET_Props/... But when downloading the ASET props pack, it just gives a folder named ASET_Props. There is also an image on the ASET page that says that ASET_Props should be in a folder named ASET. So I just made a folder called 'ASET' in my GameData, and dumped ASET_Props in there. So I now changed the model to model = ASET/ASET_Props/... and that completely fixed it. Thank you very much!