done
http://memorycoin.org/faq/#-the-client-only-shows-one-receive-address-and-i-can8217t-add-more

CSO - we could do with an FAQ on this.

check here:
https://bitsharestalk.org/index.php?topic=2611.0

and towards the end of here:
https://bitsharestalk.org/index.php?topic=2446.0

They should be there...the trick is just displaying them. They may count as an imported address - which aren't displayed by default.  Those threads may help in enabling them, etc. 

I downloaded the window .msi wallet, and synced it, and then created a new address by typing "getnewaddress" in debug window.  However,  the second time I opened the wallet, all the new created addresses disappeared. I tried many times, it seems that MMC wallet doesn't support multiple addresses for one wallet, is it correct?