Hi,

I'm writing a C# application that uses Document Manager to analyze parts and assemblies and I want to show the preview bitmap of each file.  Here is a code snippet (swDoc is a SolidWorks part or assembly file already opened with Document Manager):

            swCfgMgr = swDoc.ConfigurationManager;

            cfgName = swCfgMgr.GetActiveConfigurationName();

            swCfg = swCfgMgr.GetConfigurationByName(cfgName) as SwDMConfiguration;

            SwDmPreviewError result;

            Object prevw = swCfg.GetPreviewBitmap(out result);

When I run it, I get this error on the last line:

            Catastrophic failure (Exception from HRESULT: 0x8000FFFF (E_UNEXPECTED))

I am running on a 64-bit Windows 7 machine and I am using Visual Studio 2010.  We have SolidWorks 2010 SP4.

Any idea why I'm getting this error?  Am I doing something wrong?

Thanks,

Tom