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Greetings James, For the version of the IDV you are running (4.1) , you must have java 1.6 installed on your system, and the main idv start script must be modified to point to it if you also have java 1.7 installed. However, we have a new version of the IDV that is nearing release, and you might have better luck with it: http://www.unidata.ucar.edu/downloads/idv/nightly/index.jsp It's our nightly build, but it's running pretty well and should work with your Mac just fine. Cheers! Sean > Full Name: James Biard > Email Address: address@hidden > Organization: CICS-NC > Package Version: 4.1 build date:2013-08-02 18:38 UTC > Operating System: Mac OS X > Hardware: Java: home: > /Library/Java/JavaVirtualMachines/jdk1.7.0_45.jdk/Contents/Home/jre version: > 1.7.0_45 j3d:1.5.2 fcs (build4) > Description of problem: > > When I start IDV 4.1 on my iMac running OS X 10.9.2, the "Dashboard" > window appears, but the initial splash screen continues to show the > cylon light and display the text "Loading Defaults". I can open a data > file and select an element to display, but when I go to display it, > nothing happens. > > Ticket Details =================== Ticket ID: ZVZ-823077 Department: Support IDV Priority: Normal Status: Open