When trying to import autocad watershed data (polylines) from Civil3d2012 into HydroCAD v.10.00, I get the following error:
HydroCAD 10.00-5 s/n 03026
Error 183: AutoCAD version mismatch
AutoCAD.Application has invalid class System.__ComObject
Unable to cast COM object of type 'System.__ComObject' to interface type 'Autodesk.AutoCAD.Interop.AcadApplication'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{84F323FC-C179-4704-87E7-E3D576C2599E}' failed due to the following error: No such interface supported (Exception from HRESULT: 0x80004002 (E_NOINTERFACE))
While Opening CAD Import Demo #1.dwg
I have only one version of Civil3d running (2012), and I have the latest SP (2) installed. Is this a COM vs NET issue? I have tried the HydroCAD support, but they say it is an ongoing interop file issue.
