All my documents in my document module have become disconneted. What do I mean by this? Well, when viewing the documents listed in the document module I see that "Unknown" appears under the "Size(kb)" column for all the documents. Futhermore, when I click on a document to "Download", I recieve the following error:

Object reference not set to an instance of an object.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.

Source Error:

[NullReferenceException: Object reference not set to an instance of an object.] DotNetNuke.Common.Utilities.FileSystemUtils.DownloadFile(Int32 PortalId, Int32 FileId, Boolean ClientCache, Boolean ForceDownload) +66 DotNetNuke.Services.FileSystem.FileServerHandler.ProcessRequest(HttpContext context) +1455 System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +181 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +75 

Hi Tkerkman,

This happened, when you overwrite uploaded documents via Admin->File Manager.

You must simply refresh documents in the Documents module in the following way:

Click edit on document and then update without changes.(do it for all documents in the Documents module).
In the future you can overwrite via FTP.