As Mark has already mentioned you can copy your program to an MPE group with
the correct capabilities and run it there, but that should not be necessary
if your program needs only the basic caps: IA, BA, PH.  If your program
needs
PM, MR or DS then it does need to be copied to an MPE group.  That is
because
POSIX directories do not support any capabilities, but MPE pretends that
they
have IA,BA,PH.  I would think that a simple "hello world" c89 program would
run fine from a directory -- lots of other more complicated programs run
just
fine from directories on MPE systems.

I assume that, from the shell, you also get an error when doing:
  /tmp/Z

You might want to run the VERSION utility on Z.  You can do this from
the /tmp directory as:
  :version z     ## note VERSION does not accept HFS names so
                 #  VERSION /tmp/Z gets an error!

You should see a line of output like:
CAPABILITIES: BA,IA,MR,PH

If Z require more than these capabilities then it does need to be
copied to a group, otherwise something else is going on.

HTH,
 Jeff Vance, "CSY"

> Right, I think I've got my permissions back to how they should be so
> I'm trying Mark's suggestion to use "RUN" for a better error message.
> Remember this is just a "hello world" C program that I made with "c89"
> and copied to /tmp -
>
> ----------
> :chdir /tmp
> CWD is "/tmp".
> :run Z
> Program requires more capabilities than allowed for the group, the
> user of a
> temporary file, or the hierarchical directory user.  (LDRERR 505)
> Native mode loader message 505
> Unable to load program to be run. (CIERR 625)

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