Fail to read read groups when PG is in header

[mgymrek]

Pointed out by Isidro Cortes. When a @PG line is in the header, we report an error that no read groups are found "ERROR: No read groups found". This could be an issue in the underlying BamTools library.

[jmonlong]

Hi, I'm also getting this error. Good to know that the @PG is at fault. Any recommendation on how to handle that ? I'll try to reheader the bam files, but is there another way that doesn't require rewriting the whole bam ? Thanks,