Hi,
At the time you bought your version of Vision, NI was selling separately an OCR package: NI OCR. That's what you're missing.
Since then, we consolidated our offering and NI-OCR is now included in the Vision Development module. Vision Development module contains the Vision API for all the ADEs we support (LabVIEW, CVI, C++, Visual Basic), and also includes Vision Assistant.
If you want to create the LabVIEW VI that contains the OCR code, you need to update your Vision library to the latest version of the Vision Development module, since we're not reselling that OCR package separately anymore.
-Christophe