Designer error publishing to CentraSite

I’m using 9.5 with fixes.

I have an org setup e.g. Development with an org owner and three developer accounts e.g. Dev01, Dev02 and Dev03.

Dev01 publishes a package from the designer with Dev03 credentials and everything is ok
Dev02 creates a package on the same IS and tries to publish but fails with errors and no specific info?
Org admin logs on to CentraSite and give modify permissions to the defined IS as published by Dev01.
Dev02 can now publish services and IS doc types but not packages?

The designer dialogue refers Dev02 to review the server log for more info but there is nothing to review anywhere i.e. the IS server log shows nothing related, nothing in CentraSite and nothing in the designer … Anyone any ideas on where to look?