“Error HRESULT E_FAIL has been returned from a call to a COM component” when executing FullTextSqlQuery?

Question

I am using a FullTextSqlQuery to grab some data from a SharePoint instance. Initially I had a fairly simple where clause in which I filtered the results by the content type and everything worked fine.

I then tried to add some date filtering which added a condition like:

 AND mypublishstartdate <= '11/9/2011'

to the end. Unfortunately I am now getting the error:

Error HRESULT E_FAIL has been returned from a call to a COM component.

Exception Details: System.ServiceModel.FaultException`1[[System.ServiceModel.ExceptionDetail, System.ServiceModel, Version=3.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]]: Error HRESULT E_FAIL has been returned from a call to a COM component.

Does anyone know what I am doing wrong here?

Answer 1

Do you have a managed property called mypublishstartdate which has a crawlable property mapped to it?

Answer 2

In my case, recycling the application pool where search was running fixed this issue