- Use empty keyring.
- Import Pubkey X (but don't certifiy)
- Verify signature made by X.
- Open Details in verifcation window.
- In that window select the UID and certify.
-> You will asked to generate a new key to do the certification.
- Click yes.
--> Newcertificatewizard won't accept input.
There is probably a modality / parenting problem.