Thanks for posting! I’m not sure how this relates to my issue, but maybe it will help others. Mine was definitely a hardware issue as evidenced by me testing several boards using the same code (never got any errors compiling as I was using the proper libraries from the start) and some working, some not working at all, and others ‘kind of’ working (constantly becoming non-responsive and requiring a reset). I finally wound-up with two functioning shields after a going through a few of them via exchanges at the local store I purchased them from.