Sounds like your VS files went awry at some point, maybe after doing some reckless renaming. 
Open your solution in VS and open your Source folder. Is there a ClickerV1.Target.cs file in there?
Sounds like your VS files went awry at some point, maybe after doing some reckless renaming.
Open your solution in VS and open your Source folder. Is there a ClickerV1.Target.cs file in there?