I have downloaded this at home to try so that I can learn/master the Google Earth 3D models and then download this at my school for my class. I am having problems. I have downloaded AR 1.5 and printed marker- when I go into Google Earth and click on any model all I can see is the spinning logo. Even from the site (arsights.com) I cannot see a 3D model. However on the arsights website it has a check box for 2 choices in top left corner. One for community and one for arsights. The arsights has yellow writing next to it and it says disabled for maintenance. Is that the problem? I am so excited to get this in our computer la for my students. Please advise me on what I should try next. I installed the AR android app on my phone and it works great. If only I could get Google Earth to cooperate. Thank you for all you do. Your products are amazing.