You are downloading the Darts Checkout XAP file v220.127.116.11 for Windows Phone. Darts Checkout is a free and useful Entertainment app: Version 1.3 adds some setting possibilities and optimization.Easy to use checkout calculator for x01 Darts games using double out rule. Enter ... You can now download the offline XAP file to install & try it.
Download Locations for Darts Checkout 18.104.22.168 XAP file
Important Notice: Now Due To Unspecified Limitations, You Can Not Use The Offline XAP File To Install It Any More.
To try to install it manually from an SD card, you should choose one of the server location above to get the offline Darts Checkout XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.