If when you switch to Design mode you get the, “Using Qt Quick 1 code model instead of Qt Quick 2 (M324) error,” you are probably using the wrong default kit. You should be using the “Qt 5.3.1 Desktop” kit. Follow these steps to update your kit:

  1. From the Qt Creator menu select Tools -> Options.
  2. Click the “Build and Run” option in the “Options” pane, on the left-hand side.
  3. Under the “Kits” tab choose “Qt 5.3.1 Desktop” and click the “Make Default” button on the right-hand side.
  4. Click the “Apply” button at the bottom right-hand side.