An error occurred when the Coded UI Test Builder was started with UIMap.UITest file. You must edit or delete this file which ...

An error occurred when the Coded UI Test Builder was started with UIMap.UITest file. 
You must edit or delete this file which is located in your solution to fix the following error: 

{0}

If you delete this file, all the controls, recorded methods and assertions that you have added will be lost. 
After you fix the error, you can restart the Coded UI Test Builder.