Without hotfixes, exporting a netlist from OrCAD Capture to Allegro PCB Editor resulted in random "Packaging" failures—specifically for off-page connectors and hierarchical ports.
Many users eventually transitioned to OrCAD 16.6 , which built upon 16.5 by introducing: Trouble installing the Orcad 16.5 - PCB Design OrCAD 16.5 Hotfix SPB 16.5 Updates