Older versions of PIRform would incorrectly set the board supply under certain circumstances. If you import or open a certificate from one of these older versions, you may experience an error. This can be fixed by resetting the supply as follows.
Turn off intelligence updates
From the Home Screen, click File then PIRform Options. Go to the Intelligence section and make sure Check for updates is not checked. Click OK to save the changes:
Change the supply
Open the certificate and go each board and change the supply to a different value, then click Save. Then change the supply back to the correct value and click Save again. Now close the cert.
Turn on intelligence updates
Make you turn the Check for updates value back to being ticked (if that's how it was in the first place!).