Filering addon 1.5.2 not working on Capella 5.2


I’m trying to install the filtering addon. It seems it is correctly installed and I can activate it on the viewpoint manager. However I get errors on existing diagrams in my model (for instance elements in an OAB diagram are now named ““Invalid Feature as a name””.
I also get the error “An error has occurred. See error log for more details.
Could not initialize class org.polarsys.capella.filtering.FilteringPackage”