So I have had the same set up for a while and wanted to adjust some things in the bindings. All columns have respective data, but the Action column shows nothing for all instruments. It used to show the parameters of the VSTi in Action Column that you want to affect with the respective controller number. Now it is blank. All existing bindings are working, nevertheless.
Never mind folks, I figured it out. There is a column without a heading after target, that I had compressed which hid the parameters. The Action Columns were appropriately blank. Wish that column had a heading! The column after Target that is nameless.