Fix boo boo with open multi files including project files.
Fix boo boo with open multi files including project files.

ynotstartups/Wanhao,fieldOfView/Cura,fieldOfView/Cura,Curahelper/Cura,ynotstartups/Wanhao,hmflash/Cura,Curahelper/Cura,hmflash/Cura