Importing Watershed Data from AutoCAD Civil3d2012 into HydroCAD V.10.00

[jgotsis]

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. 

[psmart55]

This has been fixed in the latest HydroCAD-10 build 12, which is available using your previous HydroCAD-10 download details.

The lastest build supports AutoCAD 2008-2015, 32 and 64 bit.