cant get vassal to run after download

mac Xos up to date. Java 7/ I went to vassalengine.og and downloaded fo mac os 10. Downloaded to finder. opened and window opens that only has link for modules. downloaded a module but does not go to library. I dont get the toolbar with vassal,file tools,help at all. when window opens after clicking on big V in first window top line says 0 kb available. Help!!!

never mind, i figured it out.