Form create error - object not found

Hi

We have recently attended a SAP UI developers course and we had the following code that worked fine. Now 3 months later we try the code again we get an exception "Object not found" at the addex line.

I have tried using the debugger and it appears that the createobject did not work correctly.

We have tried various machines and various releases of Win XP.

Anybody got any ideas ?

Regards

Chris

Here is the code...

SAPbouiCOM.FormCreationParams formCreator = (SAPbouiCOM.FormCreationParams)sboApp.CreateObject(SAPbouiCOM.BoCreatableObjectType.cot_FormCreationParams);

formCreator.UniqueID = "BOY_UDO";

formCreator.BorderStyle = formBorderStyle.fbs_Fixed;

formCreator.FormType = "BOY_UDO";

formCreator.ObjectType = "BOY_UDO_TEST";

try

{

Form f = sboApp.Forms.AddEx(formCreator);

f.Title = "UDO Test";

f.Height = 270;

f.Width = 220;

f.Visible = true;

}

catch(Exception ex)

{

throw new Exception("addex error ", ex);

}