You are downloading the VK Messages XAP file v126.96.36.199 for Windows Phone. VK Messages is a free and useful Social app: VK Messages - application took second prize in the competition "Competition VKontakte: Messenger for Windows Phone" (http://vk.com/wp_contest), with ... You can now download the offline XAP file to install & try it.
Download Locations for VK Messages 188.8.131.52 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 VK Messages XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.