Ok, I've installed IBO4.9.3 beta and the issue still exists, but I found out where the problem is. It happens when the IBOQuery is connected to TDataSource... so I think it's something else and not IBO related. Unfortunately, I can't find the issue yet... but at least you don't need to bughunt

--- In IBObjects@yahoogroups.com, "Jason Wharton" <supportlist@...> wrote:
>
> Tom,
>
> > I'm trying to port my D7 application to D2009, but I'm experiencing some
> > problems with IBO. Each time I open a TIBOQuery, I get an AV. If I however
> > drop a fresh TIBOQuery and use the same SQL, everythings works fine when
> > opening it. So I guess it has something to do with the information in the
> > dfm files... is there another way than recreating all IBO objects to
> > migrate to D2009? Or is this something else?
>
> Not sure what it could be. Which beta version are you using? This is
> something that I flat out need to fix. Would you kindly make sure you have
> tested with the most recent beta version and then send me a simple sample
> application demonstrating the problem?
>
> Thanks,
> Jason Wharton
>