This is a very old thread, but this just happened to me.
I had been updating some records, closed Access, then a minute or two later reopened it, opened a data entry form, and all form events brought up a message like
the expression you entered as the event property setting produced the following error: object or class does not support the set of events
Taking one of the suggestions above, under References, I unchecked Microsoft Ovvice 16.0 Object Library, clicked ok to close the Reference dialog, saved the project.
Then reopened References, and checked it again, closed references & saved the project and Access now seems happy happy.
Odd.