Cannot see/open the slice and dice window

[shrewsburynil]

Using version 5.1.5, the slice and dice window was minimised and now we cannot find/open it.
When this happened in version 5.02.67 there was a registry edit solution of deleting the User Prefs Key and letting Business Objects create a new/default one

How do we cure this now as the registry looks different.

Or is there an easier way ??????