MutSig- genes that lack coverage information

Hi,
I'm trying to apply MutSig to my data, since I don't have the detailed coverage information I'm using the full coverage file. However, I get the following note:
NOTE: Found 1053 genes that lack coverage information. Excluding them.
Is it a possible to extend the full coverage file to include additional genes?

Thanks,
Omer

MutSig

sorry for the misplacement of my post