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It didn't work, in my case, with max 2016 under win 8.1.
I created the new user, logged it, launched max, the scene state dialog appears correctly.
The INI file is changed to have this section added:
[DialogResizer_SizeAndPositions]
MXSDebugFloater=270 223 582 429 1
SceneStateManageDialog=0 0 264 234 1
I logged the user out, logged back into mine, launched max, and the scene state dialog didn't come up.
I proceeded to paste the line into the INI file, restart max, and no change.