The TDV file itself does not contain the resource files (e.g., images, audio).
If you try and share this file with anyone else or move it between computers, it will not work. In order to share you file with other Video Detailer users you have to export the file as an archive (TDV-ZIP).
This can only be accomplished using Save As. To create a TVD-ZIP file to share, simply choose Save As from the main menu and select Save As, then choose TVD-ZIP File from the Save Type As drop list before saving.