What OS are you running? Have you downloaded magaminer?
Magacoin was designed to make it more difficult for ASICs and Mining Pools to get on the network to allow for a fair, equal launch of the coin.
MAGA
I've tried in Linux Mint and Win7.
I've never solo mined before so i'm assuming it's something wrong in that regard. I've got a wallet running in server mode in Win7 and am trying to mine from Mint on my local network. Getting this:
[2017-07-11 15:40:50] HTTP request failed: Connection timed out after 30000 milliseconds
[2017-07-11 15:40:50] json_rpc_call failed, retry after 30 seconds