Where did you get the crystal runtime from? If you did not make this yourself the maker probably forgot to add a module.
But, looking at your options, Crystal XI is old, very old and fully unsupported. I would advise not to spend time on this and switch to something new/different.
Vincent,
I use this runtime installer of Crystal XI:
And like I said, the QRCode works like a charm where the Developer version of Crystal XI is installed. The issue happens only on workstations with CR runtime
Regards
Fernando Henrique Chacur de Faria
Sao Paulo/SP - Brazil