Hi,
>I add a container object to a page in a pageframe on a screen like this:
>

>	WITH THISFORM.pgf1.page4
>		IF pemstatus(THISFORM.pgf1.page4,"o1",5)
>			THISFORM.pgf1.page4.REMOVEOBJECT("o1") 			
>               ENDIF
>		.NEWOBJECT("o1","cntCarrierPage","modules\vCPR3b")<----------------------
>		.o1.VISIBLE=.T.
>	ENDWITH
>

wild guess is that thisform works only for true containership. You are not ADDING in the sense of "containership" but only getting a reference into a property. Perhaps the thisform will be found if you use addobject(), but AFAIR you cannot exchange added objects via remove and addobject. So first test with an object without a "o1".

If that is the cause, some other workarounds usable for programmatic interaction should be obvious, if you are not happy with the one already working for user interaction.

HTH

thomas