So many of the PEG CDKM files crash to desktop for me on my Mac . I even went to far as to download a fresh SC4 from the App Store and load nothing but the NAM and CDKM files one at a time. It still crashed when I got to certain lots. Some of the specific lots that crash are all of the seaports, and many of the Marina lots. Any suggestions? Or am I just lucky to get what PEG lots do work?