Xavier There are several posts on using the granite module for Pro-E. Now it will allow you to open the model and 'see" the model tree, but you will not be able to edit any features created in a newer release of Pro-E. Certainly you can create new features. The granite module is not the "magic solution". The best advice I can give to all that face this issue is to install the older versions of Pro-E, as needed, and model in them. It is rather easy to create new launch commands for each Pro-E version you need. Eric
