无法在MacGDBp中打开任何文件

I’ve just downloaded MacGDBp on my Mac but cannot use it because I cannot open or read any file from it. In the « File » menu, only « Open Recent » (pointing to an empty list) and « Close » are enabled. I also tried using « Open as » on a file of my project to open it with MacGdBp, but that was refused also by the system.I’ve just downloaded MacGDBp on my Mac but cann