V1.0.1 System.Runtime.InteropServices.COMException (0x800706BA)

I’m getting this error


System.Runtime.InteropServices.COMException (0x800706BA): The RPC server is unavailable. (Exception from HRESULT: 0x800706BA)
   at PDFCreator._clsPDFCreator.cIsPrintable(String filename)

Any ideas?


Additional info…


Windows Server 2008 R2, Office 2010.

The error occurs with a .xls file.

It’s a bit random when the exception occurs, I am unable to reproduce.