I checked our copy of the Publication Manual of the APA and we do have the earlier version of the 6th edition with errors .
Look at the sample one-experiment paper (figure 2.1) page 41 . The words “Running head:” in the header is at the top of every page, this is the the wrong version.
This is the correct version:
http://www.apastyle.org/manual/related/sample-experiment-paper-1.pdf
Here is a link to the Reprint Corrections
http://supp.apa.org/style/pubman-reprint-corrections-for-2e.pdf
We'll have to go shopping or see if funds are available now.
