[NCQE] Enigma of the Cove Rocks?

I had the same problem...Then I read this thread and tried looking for a dig spot in Oasis Springs, went to the park there and found a dig sport, so that worked...the very next task had my sim return to Founders Cove to view the tree there...and when my sims gets there, I find a dig spot right next to the tree (see pic below). I am not sure if it's because I reloaded the FC, loaded into a different lot, or just had to wait longer for it to appear. Problem solved and I'm glad i never have to worry about this bug again. so sad.