Automatic Build Test revealed a major memory leak when loading and displaying volume data, so this is in the process of being fixed.

Fixed the error of the uninitialized bounding rectangle in the Histogram visualization

Working on the problem displaying histogram on real-valued volumes such as Parametric maps and PET volumes.

Resolved the "artifical background" problem for determining Display Center\Window.
Solution was to see if "0" entries constitute an artificially  high proportion of all voxels. In that case they are excluded from the calculation.