commandbutton tags

[RAYLWARD102]

I'm dynamically creating about 600+ buttons in my user form that can be accessed by various multi-pages available to the user. All of my buttons are created perfectly but of course; there is one problem. In my loop for creating the buttons, I assign the row number to the button tag. In testing with msgbox cmdgroup.tag, about half of the buttons work. The other half do not for some reason? No errors, just no msgbox with the stored tag information.
Any idea's? Is it a memory problem?