If you have problems with the mac wallet, follow these steps
on a mac it crashed so, quit client then:
bash-3.2$ cd Library/Application\ Support/Archcoin/
bash-3.2$ cp wallet.dat ~
bash-3.2$ rm *
bash-3.2$ cp ~/wallet.dat .
hope that bash shell you're working in has been patched
wallet is very very clean. great stuff so far man!!