That module appears to be available in the Extension Manager in both Slicer 4.8 on Windows and a recent nightly that I had open on Mac. So please try either Slicer 4.8 or the most recent nightly.
-
Before using on your own data, the first step is to try the test data and tutorial here:
-
Someone might suggest a quick fix if you post the Error Log – click the gray (or probably red) circle with X at the bottom-right part of the window:
-
you could also try filing an issue with the information above (error log, etc.), however, this extension has not been updated for several years and may no longer be maintained.