Mac OS 10.7.5 compatible with Bitcoin-Qt.app? Program runs but doesn't seem to be able to synchronize with network.  Is there more to installing program than just dragging into applications folder?

I'm also confused about why I don't have a Bitcoin folder in Application Support folder of Library folder...  (If invisible, how do I make it visible?)

I'm a returning user after being away for about a year....  trying to access an old wallet.dat file saved on USB stick
Apple 10.7 hides the Users Library folder (where bitcoins saves its stuff), it's there, just not visible. Open terminal and enter
chflags nohidden ~/Library
to make it visible.