(GSKit) Access to the key database is not allowed

I am getting the error in the subject line when trying to use HTTPS
via Scott's HTTP API library.  I realize this means the user does not
have access to the *SYSTEM certificate store.  What I can't figure out
is why. The system is on V6R1.

I have already done everything I can find in the archives such as here:

http://archive.midrange.com/midrange-l/200711/msg01029.html

and here:

http://www.scottklement.com/archives/ftpapi/200509/msg00077.html

In other words, I have set the *PUBLIC authority to *RW for every
folder in this path:

 /QIBM/UserData/ICSS/Cert/Server

as well as the two DEFAULT.* files in the above folder. Plus the
steps in the ReadMe included with HTTPAPI to grant users permission to
run SSL applications.

Users with *ALLOBJ authority naturally have access but not others, and
I can't find anything that will tell me what object(s) I still need to
grant access to.

Any suggestions?