Problem with Hooks During Upgrade from 12.1 to 12.2

Hi

1) BACKGROUND

I have an SR open for this, but I don't seem to be making much progress, so I am hoping that I can get some additional ideas from the community.

I am not an HR expert, I am a DBA, so I am not too familiar with the concept of 'hooks'.

2) PROBLEM DESCRIPTION

Previously we were able to complete trial upgrades from 12.1.3 to 12.2.5 without any issues.

Since applying patch 21980909 (12.1 HRMS RUP9) in our 12.1.3 environment our 12.2.5 trial upgrade process has stopped working. We are getting the errors (listed below) during the application of the 12.2.0 upgrade patch (10124646).

Oracle Support have told me to ignore the errors and proceed with the upgrade. I have done this, but after the upgrade I get errors like this (which I didn't encounter in my pre-RUP9 upgrades);