Eigen,

>Btw my problem turned out to be the Ansi issue, not the name conflict about 'mybase'!

It's a bug in My code. Did you report it to MS so it can be fixed? For now, you can fix it as follows

* GetMembers method of Myfoxcode class
*select * from __My where upper(MEMBER) = lcNameSpace and not deleted() ;
*	into cursor (lcCursor)
 
select * from __My where upper(MEMBER) LIKE(lcNameSpace + "%") and not deleted() ;
	into cursor (lcCursor)
*--------------------------------------------
* AddMebers method of Mybase class 
*select * from __MY where upper(MEMBER) = lcNameSpace and not empty(CLASS) and ;
*	not deleted() into cursor (lcCursor)

select * from __MY where upper(MEMBER) LIKE (lcNameSpace + "%") and not empty(CLASS) and ;
	not deleted() into cursor (lcCursor)