You are downloading the GTasker XAP file v22.214.171.124 for Windows Phone. GTasker is a free and useful Productivity app: This is a task management app that manages Google Tasks (GTask) in your Google account. Please login with your Google account to manage your ... You can now download the offline XAP file to install & try it.
Download Locations for GTasker 126.96.36.199 XAP file
Note: To install it manually from an SD card, you should choose one of the server location above to get the offline GTasker XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.