Error Opening Pdf Report Called Via SOAP

We've been opening pdf reports using SOAP for some time now and all of the sudden we're getting errors when the user is on IE6. IE7 is fine.

The error we're getting is from the Acrobat reader is:

"There was an error opening the document. The file cannot be found"

Here's the code that opens the report:


Dim report As Byte() = Nothing

Dim rs As report_engine2.ReportExecutionService = New report_engine2.ReportExecutionService

'credentials

rs.Credentials = New System.Net.NetworkCredential(rs_login, rs_password)

rs.PreAuthenticate = True

Dim reportpath As String = rs_folder & report_name

Dim zoom As String = "False"

Dim deviceInfo As String = Nothing

Select Case format

Case "HTML4.0", "HTML3.2"

deviceInfo = "<DeviceInfo>"

deviceInfo &= "<Toolbar>False</Toolbar>"

deviceInfo &= "<Parameters>False</Parameters>"

deviceInfo &= "<HTMLFragment>True</HTMLFragment>"

deviceInfo &= "<StyleStream>False</StyleStream>"

deviceInfo &= "<Section>0</Section>"

deviceInfo &= "<Zoom>" & zoom & "</Zoom>"

deviceInfo &= "</DeviceInfo>"

Case Else

deviceInfo = "<DeviceInfo></DeviceInfo>"

End Select



'array of parameters

Dim parameters(0) As report_engine2.ParameterValue '0 means one parameter in the report

Dim paramValue As report_engine2.ParameterValue = New report_engine2.ParameterValue

paramValue.Name = param1_name

paramValue.Value = param1_value

parameters(0) = paramValue

'variables for the remaining paramters

Dim historyID As String = Nothing

Dim credentials As report_engine2.DataSourceCredentials = Nothing

Dim showHideToggle As String = Nothing

Dim extension As String = GetExtension(mimeType)

Dim warnings() As report_engine2.Warning = Nothing

Dim reportHistoryParameters() As report_engine2.ParameterValue = Nothing

Dim streamIDS() As String = Nothing

Dim execInfo As New report_engine2.ExecutionInfo

Dim execHeader As New report_engine2.ExecutionHeader

rs.ExecutionHeaderValue = execHeader

execInfo = rs.LoadReport(reportpath, historyID)

rs.SetExecutionParameters(parameters, "en-us")

Try

'execute the report

report = rs.Render(format, deviceInfo, "", mimeType, "", warnings, streamIDS)

'set the filename

Dim fileName As String = savefilename & "." & extension

'write the report back to the response object

response.Clear()

response.ContentType = mimeType

'add the file name to the response if it is not a web browser format.

If mimeType <> "text/html" Then

response.AddHeader("Content-Disposition", "attachment; filename=" & fileName)

End If



'send the byte array containing the report

HttpContext.Current.Response.BinaryWrite(report)

HttpContext.Current.Response.End()

Catch ex As Exception

End Try



This used to work just fine until about a week ago. We're not sure if there was a MS update that caused this behavior. If the user saves the report to a local disk instead of opening it, they can save it successfully and open it later.

Any thoughts on where to go with this one?

Regards