Downloaded the version of Logos 4 that is available on the web. Is useless and crashes when I tried to select a Bible version. Went ahead and purchased the Bible Study version - turned out to be an older version and it does the exactly same thing - no functionality and crashes when I select a Bible version. Don't think teh software ever actually installed. Does anyone know how to get Logos 4 installed on a MacBook Air? What is indexing and how do I get it going?