Step 1: When you purchase Image Viewer CP ActiveX, you will receive an email with full version download link and license key.
Step 2: Reinstalled full version setup disk. Do not use evaluation version !
Step 3: Open our sample or your sample.

Step 4: You can set the license key in form load event or design time. In our sample , it have 2 instance of Image Viewer cp ActiveX on form, so you need set the license key for each instance.