See if the following help:
http://support.microsoft.com/default.aspx?scid=kb;EN-US;192693>All:
>
>When I run a program using a form that has the RichtextControl, I get OLE error code 0x80040112, "Class is not licensed for use". I registered RICHTX32.OCX using regsvr32.
>Are there other files in Windows that RICHTX32.OCX is dependent on?
>
>Thanks in advance,
>
>Ted Badje