ESRI AppRef Throws Com 8000FFFF error

Question

i am using the arcGIS api to make a plugin for arcFM, when i try to run this code

 Type t = Type.GetTypeFromProgID("esriFramework.AppRef");
                System.Object obj = Activator.CreateInstance(t);
                pApp = obj as IApplication;

i get

System.Runtime.InteropServices.COMException(0x8000FFFF): Creating an instance of the component with CLSID {Appref CLSID HERE} from the IClassFactory faileddue to the following error: 8000ffff

Thanks

Answer 1

This was impossible i needed to be using arcMap not ArcFM