You are downloading the WindUp XAP file v126.96.36.1990 for Windows Phone. WindUp is a free and useful Social app: Create and share fun, temporary messages and media with friends using WindUp. Decide how long a message will last - set it to expire after a time or ... You can now download the offline XAP file to install & try it.
Download Locations for WindUp 188.8.131.520 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 WindUp XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.