Outlook Addin: Modal form Crash

[Sameers (theAngrycodeR)]

I have a simple outlook addin in which I am showing some dialog forms.
It worked fine in the past but now when the child form is closed,
outlook hangs for a while and then crash saying
"Microsoft Office Outlook has encountered a problem and needs to close.
We are sorry for the inconvenience."

I have debugged and created log of thins and I can see that all work
gets done when this crash happens. That means, when outlook crash,
there is no code executing, the child form has closed (I also have
tried to dispose and set to nothing/null). If I set the forms to non
dialog, it works fine, no crash happens.

I am using VS .NET 2003, VB as the language and using Microsoft
Office Extensibility to create this addin.

Any idea would be highly appreciated.

Thanks,
Sameers