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Much to my frustration I recently purchased a Mac Book Pro.  I think I am getting to old to learn new tricks since every time I try to do something with it I have another frustrating night.  I tried to download a free version of Topo for Colorado.  It downloaded and went to the download file.  I then went in ifinder and clicked it and it said it was downloaded but it is not in Base camp.  Any idea what I am doing wrong?