To: Serge Therrien
First of all, please make sure you have administrative permissions for program installation and registration.
If yes, please could you provide us with the information on your PC (OS, service pack, if you use 32- or 64-bit system).
Also specify whether you get the error every time you open AVS Video Converter.
Try to repair AVS files and inform us if all the .dll files are registered:
1. Close AVS Video Converter and all other running programs and applications.
2. Next follow Start > All Programs > AVS4YOU > Repair
Looking forward to hearing from you