Thank you trying Test Studio.
In order to help you best please provide more detailed information.
1. Is Test Studio able to launch your WPF application?
2. Is Test Studio able to attach to the application?
3. Please record a short video to show us the issue you are experiencing. Jing is great for this.
4. Send us the application log. Please first clear the log and then reproduce the issue.
Thanks for helping us advise you.
All the best,
the Telerik team