This answer is based on your question: https://forum-controlsystems.abb.com/20200671/ABB-Device-library-wizard-error.
PPA system is the 800xA Process Portal A system. You can check if your 800xA system is healthy by checking the system icon on the bottom right corner.
Do you have a SingleEngineering node? If no, try running Device Library Wizard on the Primary Aspect Server.
Did you create the PPA system? Or restored from a system backup?
Check if your user account has sufficient privileges.
Double click on the PPA service and check if all the service statuses are green.
Following softwar should be installed in the Primary Aspect Server:
ABB Device Library Wizard - Server and Client
ABB Device Management FOUNDATION Fieldbus
Which system version are you using?
In SV 6.0, system extension loading is taken care by System Configuration Console during the time of system function installation. But if you are using SV 5.1, make sure that extensions for Fieldbus Builder Profibus/HART and Device Library are loaded. Confirm the same from your primary aspect server:
[Admin Structure -> Administrative Objects -> Domains -> YOUR_DOMAIN -> System Extension aspect]
If you still have queries, I would suggest you to contact your regional support center for assistance.