I just upgraded from 10.3.1 to 10.5 yesterday afternoon. Since that time, I have not been able to view any folder connections in standalone ArcCatalog. It crashes every time. I deleted all of the config files where the folder and other connections are stored but when I add a new folder connection, it crashes as soon as I try to view the folder contents. Strangely enough, if I access ArcCatalog through ArcMap, it works just fine. Has anyone else experienced this issue? I use standalone ArcCatalog quite frequently and this is bothersome. Thanks!