We are seeing the following error loading our model: Failed to load Windows configuration. Reseting to default.
This is known problem. Your model and diagrams are ok, the only thing, which could not be restored, is layout of MagicDraw windows inside application. Such things can happen when project is saved and then loaded on computers which has different resolution or different windows management system.
Usually this error does not appear any more after save and load. If it still exists after save/load, please send us md.log file from the user home/.magicdraw directory (the info about where the MagicDraw configuration files are located, you may find in the About screen).