When creating a custom wizard using SmartWizards in K2 4.6.5, textboxes can be configured on the wizard screen which allows you to either type in text or drag in a field from the context browser. Text can be typed in, however, when you drag in a field from the context browser you are prevented from dropping the field in the textbox. This issue only occurs on SmartWizards in K2 Studio and K2 Designer for Visual Studio.
No error message is displayed but the ‘not allowed’ icon will be displayed.
Contact K2 Support who will provide you with a hotfix.