In the vb editor go Tool>References and see if any are marked as missing and fix them. If not, hopefully you can still open the db in the older version (but I kinda doubt it) and compare the chosen references between the two. I think you're missing a reference or it is broken. If you have an old backup copy it is likely that you can get a list of those references. This is why I put them in a table in other projects.
The more we hear silence, the more we begin to think about our value in this universe.
Paraphrase of Professor Brian Cox.