Access VBA - CloseCurrentDatabase

I have a little app written in Access.
In function Main which is called by the autoexec macro I do some initialization before loading the main form.
Based on some conditions, a restart is sometimes required.
I call the CloseCurrentDatabase method to close the current database (I can't call quit becuase it doesn't save the changes to any options) and get an Action failed error.
this is a problem because the database window is showing after they close the error window.

Anyone knows why I'm getting this. I have another app and it's working perfectly.
Thanks,

Could it be because that in this "problem" db your having errors that are causing yuo to re-open your db?

No, I stepped through the code and the only line causing an error is the one calling the CloseCurrentDatabase function.

Can you tell me more of what your doing that requires you to re-open your db?

I'm not re-opening the db.
I found the problem.
the macro was calling the function this way:
=Main()
When it should have been calling it this way:
Main()

Thanks,