This is because V-Pro is in conflict with another software program on your computer. Please do as follows:
+ Uninstall V-Pro from your computer. Remember to save configuration files which are located in C:\Program Files\Viet Capital Securities\V-Pro\syschart and C:\Program Files\Viet Capital Securities\V-Pro\cfg
+ Remove the folder Viet Capital Securities. Normally the location is C:\Program Files\Viet Capital Securities.
+ Restart your computer and re-install V-Pro