C:\Program Files (x86)\Adobe\Photoshop Elements 7.0\PhotoshopelementsEditor.exe
Windows Object
Photoshop.PlugIn
There are many ways to open file with specific file extension. There could be also multiple applications which you can use to open 8BA file. Learn more how to open APK file. Also you can try using hex or text editors like HexView or Notepad++ to open 8BA files.