To return Vijeo-Designer back to default state, perform the following steps carefully:

1) Delete the folder and contents of C:\Program Files\Schneider Electric\Vijeo-Designer\Vijeo-Frame\Environment

2) Delete C:\Program Files\Schneider Electric\Vijeo-Designer\Vijeo-Frame\Defaults.xml

3) Open Regedit and delete the following key:
HKEY_CURRENT_USER\Software\Schneider Electric\vijeo-frame

If the objects are missing from the window, make sure that the entire \Schneider Electric\Vijeo-Designer\ folder is not set to read-only.