>When I tried to insert a control in my form, the following error appearred :
>
>OLE error code 0x80040112: Appropriate licence for this class not found
>
>
>What should i do?
>
>Thanks in advance
>
>
>Aaron Chu

That error means that you do not have the Design-Time License for that ActiveX control.

You have to reinstall the ActiveX to update the registry with the appropriate license.