"Performance =

I have used the optimize paramater on knn on a training and validation dataset to create a model.  When I apply this model to  new data, a predicted value for the labeled variable is created, however the performance (RMSE, adjusted r^2) is reported as "unknown" for the new data.  (I am able to see the performance of the original training model). 
Why is this happening?  How do I fix it?
I have attached all appropriate files and rmp files