Can't Open file with pr-edit

[Perry, John (Manpower Contract)]

I have been trying tirelessly to get Gnats to work and I think I've
found the problem, but I'm not sure how to fix it.  The following
occurs:

telnet localhost 1529
User <my username> <my password>

Returns
        user access level set to admin

Edit <pr #>

Returns
        640 can't open file `'

Any idea on what couldn't be causing this?  I have set the permissions
on the "lock" directory to 777 and the owener is gnats and the group is
bin.

Thanks