Can't create a CamelContextXmlTest file for testing a route with JUnit

Create a simple_route in the route editor. Open the New Camel JUnit Test Case wizard and fill in the necessary fileds. Click Next to select the endpoints (or skip this step - doesn't matter) , then click Finish. Nothing happens. Clicking Finish from either the Test Endpoints page or from the New Camel JUnit Test Case page does nothing. No CamelContextXmlTest file is created and you have to click Cancel to close the wizard.