Column/Table Properties window is not opening in some models - why? (E955672)

Description: 

In some of my models, on the physical side, I cannot open the Column/Table Properties Editor by double clicking it or right clicking it why?

Solution:

This is most likely because the application is not working as expected.  Perhaps some parameters have been compromised.  This can be fixed by 'cleaning' the registry as follows::

1. Close erwin DM.
2. Run REGEDIT
3. Go to Computer\HKEY_CURRENT_USER\Software\erwin\Data Modeler and rename the 9.7 entry to 9.7.old
4. Launch erwin DM again and try to open the Column/Table Properties Editor.

It should now open without any issues. When the 'node' is renamed in the registry, it is recreated with the default parameters.  So, this clears any entry which may not be working as expected.  Please note that this will also clear some other entries like 'Most Recently Used' (MRU) models that you see when opening a file.