Are ALL of your files .G files? Here's what I have...
At the top level, a directory named CM93.
Under that are 100-some directories with numbers for names, 8 digits each.
Under each of those are directories with letters for names, and a .inf file.
Under each of those are files that have suffix of the directory name (.A, .B, .C, etc)
So I have .G files, but only under the G directories, and only under the directories where the letters go up to G, which not all do.
I point to the top level, CM93 directory. It figures everything out below that.