MADateDescription and nil objects

[Lukas Renggli]

> I have a couple of MADateDescription to manage the effective date and
> the expiration date of a structure and their values could be either a
> valid date or nil.

How does the description-definition of your MADateDescription look  
like? I quickly tried on my machine and it works as expected.

> 3. Delete the content of the field, MADateDescription complains about
> an invalid date format.

Sorry, I am unable to reproduce.

Cheers,
Lukas

-- 
Lukas Renggli
http://www.lukas-renggli.ch