You may get the this error message:
Application '...' couldn't be started. Starting application timed out after 20s. Could not hook into the AUT. You may have to exit the AUT manually.
Please check the Article - Requirements of Squish for Qt.
The working directory in the test suite settings is not configured, or set to a path that is not expected by the application.
Try to set the working directory in the test suite settings to a path that the application expects, or choose "Path of Application Binary".
If you are still having problems see Collecting Information for your Support Requests.