I do not know much about this but have been using designor for a couple of years with versions 4.6, 5, and 6. On this latest update, all links and shortcuts to the designer are gone and I am not sure how to proceed.
Subject: Installed update 6.01 - lost designer
It’s in this forum somwhere … There are two incremental installers for 6.0.1. I believe you installed the wrong one, and it does not include Designer. Download the correct one and Designer should come back.