You may need 4.6.1, which you can get from CVS by checking out the branch tagged "oacs-4-6". We'll have a 4.6.1 beta2 tarball available in the next few days, it's just awaiting some testing on a server at Sloan, and there's been a bit of a hassle getting data imported onto that server (typical Unix/Oracle "gotcha" stuff)
Thelma,
the error message you are getting is a strong indication that your code, or some of your code, is on cvs head rather than the 4.6 branch. Do you have any catalog xml files in your source tree? In that case you must be on cvs head. See my posts in this thread: