A feeling of anger or annoyance caused by being unable to solve a puzzle while at the same time recognizing and enjoying the thoughtfulness and effort used to create this puzzle.
Fruppreciation describes perfectly well how I feel when trying to solve many of the puzzle caches here in the Bay Area. Below is a short list of puzzle caches I came across that span the range from deep frustration (How the heck can I ever solve that!) to grateful appreciation after finally solving the mystery and finding the prize.
After this cache has disappeared twice within a month I have relocated it to a different location using a different hide style. Currently, the puzzle still results in the original hide location, but the coordinates of the updated GZ are shown in the certitude hint. Solvers before 4/21/2016 please recheck your solution with certitude (or send me a message) to get the new location details.
You can validate your puzzle solution with certitude.