Impossible to see analysis log details

Hello, 

clicking on a log entry I got a classic C# error :-)

Server Error in '/app' Application.

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:
 

Line 47: ddlFilterReport.DataBind() Line 48: 'ddlFilterReport.Items.Insert(0, New ListItem("-", -1)) Line 49: ddlFilterReport.Items.Insert(0, New ListItem(FITS.FilterName, EvaluateFilter(FITS.FilterName))) Line 50: Line 51: hidSeqName.Value = ToStr(Request.QueryString("seq"))

Source File: C:\inetpub\wwwroot\app\restricted\SingleImageReport.aspx.vb    Line: 49

Stack Trace:
 

[NullReferenceException: Object reference not set to an instance of an object.] SingleImageReport.Page_Load(Object sender, EventArgs e) in C:\inetpub\wwwroot\app\restricted\SingleImageReport.aspx.vb:49 System.Web.UI.Control.OnLoad(EventArgs e) +97 System.Web.UI.Control.LoadRecursive() +61 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +693