@grazcoin looks great, I like your site and would love to participate, but I can't seem to get it to work.
Whenever I try to add an address to the wallet, I end up with an empty wallet with no addresses in it.
I think you can only add addresses that received MSC or TMSC.
Indeed. For now, a wallet can only have addresses that already received MSC/TMSC.
If you want to work with an address that *doesn't have yet* MSC/TMSC, you should first send MSC/TMSC to that address (using a wallet of an address that does have such coins, and the button send).
Once you have MSC/TMSC on that address, you can add it to a wallet.