broken bakefile in openSUSE_11.0 x86_64?

I have package that uses bakefile and for every repo included in {openSUSE_11.0, openSUSE_11.1} x {i586,x86_64} \ {openSUSE_11.0, x86_64} compiles fine, but in openSUSE_11.0 x86_64 it fails:

+ bakefile -f gnu osgART.bkl
Usage: bakefile [options] inputfile.bkl

bakefile: error: invalid format

available formats are:

error: Bad exit status from /var/tmp/rpm-tmp.28517 (%prep)

Should I send this on the bugtracker?