There is nothing tricky in CreateObject(). I had chance already to reply about GPFs.

>Ah, we've come full circle, then :-)
>The difficulty I had with substituting CREATEOBJECT for ADDOBJECT was that during development I was GPFing a lot. I have nothing but suspicions that the problems were related. But the fewer tricks I play like this, the better my comfort is.
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>Regards,
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>
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>Yes, basically I said exactly same, but note, that not every object can be included to specific container, here the limitation of AddObject is. Using linked CreateObject() allows to overcome this particular limitation.