>I have a mapping application that has a map control on a form. Every time layers are added to the control the BeforeLayerDraw method is called. The code in that method runs just fine until I call a method that must call the BeforeLayerDraw method. When that happens I get on error on one of the object references. The error is Member Layers does not evaluate to an object. In the watch window of the debugger it shows that reference to be valid. I placed this code just before the line to see if it would stop there but that didn't seem to help.
>
>DO WHILE TYPE('this.Layers(i)') = "U"
>ENDDO
>
>What could be happening?
>
>Thanks in Advance.

If the object was NULLed, the object reference will evaluate to .NULL. (which causes your "not an object" error), however the TYPE() function will still return "O".
You might want to check like

IF TYPE('this.Layers(i)') = "O" and !ISNULL(this.Layers(i)) && this is an object