Can anyone help me with this…

I am converting a VB6 application to .NET which using the RichTextBox control heavily for formatted text. Being that there is no easy way to print RTF text using the .NET control I reverted to using the VB6 control for this functionality (adding the reference RichTextLib)

This works fine – on my development PC! But as soon as I try to print on another PC I get the error "class is not licensed for use".

I’ve tried registering DLL’s and so on as suggested by other people with this error but to no avail.

Can anyone give me any clues on this one?
Thanks.