Invalid Layer

[PrasadUddanti]

Hi i am using Autocad 2014 API facing some issues in autocad 2014 API.

while assign Freeze property is false on first layer through coding i am getting error message invalid layer.Please help on that.

 

Please see the below VB.Net code

 

For Each objLayer As Autodesk.AutoCAD.Interop.Common.AcadLayer In Acad.ActiveDocument.Layers

objLayer.LayerOn = True

objLayer.Freeze = False

Next objLayer

[Hippe013]

Maybe because the current Layer cannot be frozen... Taking a shot in the dark here.