Problems with my mini med pump

I have te mini med paradigm 522 and every like 3 times i change it my pump says insulin failed and wants me to rewind my pump or ignore the alert and have no insuln delivery... so i have to change my pump and the next two or three times i change it it works fine then it happen again... anyone experience this or have anyideas of wha  is happening or what im doing wrong???

It doesnt happen all the time but it sure feels like it!