Hey Mike, Long time no see.
As you know I am a big fan of the ctgrid but I have noticed a few issues with it. It can have a tendency to remain visible or stay in the on top of other container objects. One work around I found is setting the visible = .t. in the activate event of the parent container and visible = .f. int the deactivate event. Without doing this I have noticed that it can "stick" especially when used with pageframes