Error replacing in Evoq Engage 8.1

[bdukes]

Error: Engage: F3 is currently unavailable. 
DotNetNuke.Services.Exceptions.ModuleLoadException: 
Method 'DotNetNuke.Professional.HtmlPro.HtmlTextController.GetWorkflow' not found. ---> 
System.MissingMethodException: 
Method 'DotNetNuke.Professional.HtmlPro.HtmlTextController.GetWorkflow' not found. 
at System.RuntimeType.InvokeMember(String name, BindingFlags bindingFlags, Binder binder, Object target, Object[] providedArgs, ParameterModifier[] modifiers, CultureInfo culture, String[] namedParams) 
at Engage.Dnn.F3.HtmlTextModuleController.GetWorkflowId(Int32 moduleId, Int32 tabId, Int32 portalId) 
at Engage.Dnn.F3.ViewLinks.CreateNewTextHtmlVersion(String searchValue, String replacementValue, Int32 moduleId, Int32 tabId, Int32 portalId, String content) 
at Engage.Dnn.F3.ViewLinks.ReplaceTextHtmlButton_Click(Object sender, EventArgs e)

[bdukes]

I would imagine that this applies to all Evoq Content flavors starting in version 8.0.0, but need to verify that.