You are downloading the FileBox XAP file v188.8.131.52 for Windows Phone. FileBox is a free and useful Productivity app: ** This app has exactly the same function as "FileBox" !** Purchase it only if you really appreciate my work :)** FileBox : ... You can now download the offline XAP file to install & try it.
Download Locations for FileBox 184.108.40.206 XAP file
Note: To install it manually from an SD card, you should choose one of the server location above to get the offline FileBox XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.