Recently i've encountered a very annonying bug with Substance Designer in which designer crashes when I attemp to link a 3D Mesh. The window pops up and immediately crashes the tool. I've tried reinstalling, but it still crashes. I've managed to work around this by going to Link > Other, and loading meshes that way, but I'd love to know why linking 3D meshes is crashing. Note: it's not my mesh that's crashing the application, I don't even get that far, the tool has crashed before I can pick anything mesh to link. It could be because my previous path towards linking a mesh no longer exists as I archived some files, but why would that crash the entire application?!
Thanks for the detailled message about your issue. Unfortunately I'm not able to reproduce the crash even if I remove / move folders. Did you send the crash report associated to your crash when you started the application again after the crash? It helps a lot to better understand what happens.