You must specify the OpenROAD 6.2 development environment fully and accurately; the previous checklist should prove helpful in this regard (see Create a 6.2 Test Environment).

If possible, export a test or sample OpenROAD application, import it into your 6.2 environment, and execute it from OpenROAD Workbench to confirm that your development environment provides the appropriate permissions, connectivity, settings, and so forth, listed previously. This may save considerable effort later.