You are downloading the Mobile Slate XAP file v220.127.116.11 for Windows Phone. Mobile Slate is a free and useful Photo & Video app: Updated to Version 3.0 - Improved responsiveness.NEW ICON DESIGNIs there a feature you would like Mobile Slate to have?Simply ... You can now download the offline XAP file to install & try it.
Download Locations for Mobile Slate 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 Mobile Slate XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.