by default the qmlproject is not created in the Quick (QML) project setup in the latest Qt Creator. But you can find the workflow to work with Qt DS and Creator if you create the project with template 'Other Project -> Qt Quick UI Prototype' which you will find in Qt Creator's project creator. This is done by marking "Create a project taht you can open in Qt Design Studio" when going through the wizard. I verified this with Qt Creator 15 and Qt DS 4.6.