Errors when installing PVMT viewpoint

Hi,

I installed the PVMT add-on in Capella and I am having two problems:

  • The add-on is not installed correctly, I am having the following : Plug-in com.thalesgroup.vpd.property.view was unable to load class com.thalesgroup.vpd.property.view.views.ViewPointsView.

  • I lost all the content of the my model, my model looks like below (No functions, no exchanges, no names,…)

Do you have any recommendations?

Thank you