I haven't used the secstate tool much recently, so I can't address that... but as for the oscap command above, where on the webpage did you find it? That's an outdated invocation and needs to be updated.
I am attempting a secstate audit and would like to use the newly released scap-security-guide v0.1-10. I have tried simply applying the v0.1-10 rpm and importing that content into secstate. When running a profile (no matter which is selected), the report shows that none of the rules have been selected. Backing up a layer, I simply tried the instructions on the scap-security-guide webpage of running:
oscap xccdf eval --profile common /usr/share/xml/scap/ssg/content/ssg-rhel6-xccdf.xml...and then all output shows "Result notapplicable".