Collectible Card Game Headquarters

hello, i am trying to download and run xmage on my laptop, and every time i try to open it, this happens

XMage version installed:
XMage version available: 1.4.12v0 (2016-05-29)
XMage not found
Reading config from xmage.de/xmage/config.
i can't post the link because it says i'm too new to put links in.
json
XMage version installed:
XMage version available: 1.4.12v0 (2016-05-29)
XMage not found

what do?