I have this issue as well. It will work for a little bit and let me place lots and then all the sudden it starts to stop letting me click on them in the gallery and then completely won’t open anything. I haven’t had this issues before I updated my game to most recent update. I keep getting a UI last execptipn but I Tmex exceptions. One of the notable sentences in the execptipn is cannot access a property or method of a null object reference. It also says xml version = 1.0 in both the UI and normal exception🤷I know something somewhere is probably broken as have a massive cache/online thumbnail so will have to do some mod searching