I think I found a bug with the VFS, when you mount a folder without autoupdate. Sometimes the directory tree is incomplete, I think there is a loop somewhere because in the status bar, the number of added item is increasing but never stop. And if I try to remove the folder to stop it, it crash. It don't depend of the number of files in the folder, I'm not sure why it does it. I'll see if I can find the trigger.