My gpostpp_dir setting was indeed not pointing to the right directory.  It turned out that the gpost directory was missing entirely.  After reinstalling Creo and setting the gpostpp, all seems to work now.  Thank you.

Use a load file if your LDAP JNDI Adapter(s) are configured for read-write. The process will fail if the user account already exists.     Loader syntax comes from %wt_home%\loadFiles\csvmapfile.txt... User~create~wt.load.LoadUser.createUser~user~newU... View more

Thanks for the hints, really appreciated! -Yes, I'm using the admin appKey just for testing.I tried both of these queries:'https://HOSTNAME/Thingworx/Importer' + '?IgnoreBadValueStreamData=false' + '&WithSubsystems=false' + '&overwriteCo... View more