Fixing registration defect reported by Dr. Rsinek:

FV124 crashes when running 3D coregistration in several configurations:

 Try to reproduce these steps:

1) open raw:    parkp_rt.qr.im
2) Layer control ; open raw :   parkp_rt.qr_targetROI.im

Similar result was obtained with "Mutual Information Normalized".   The "Noise" level that defines binning of the histogram for Mutual Information can vary in a wide range from [20,1600] with a good result.