Upload af billeder filenotfound exception

Hej
Efter Dec opdateringer af .net får vi fejl når der uploades billeder til en webab.

Det skal siges at det har fungeret upåklageligt i flere år...

Server Error in '/' Application.
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C:\inetpub\wwwroot\RC\cl_upload\
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.IO.FileNotFoundException: C:\inetpub\wwwroot\RC\cl_upload\

Source Error:


Line 40:    t = Request("t")
Line 41:   
Line 42:    originalimg = System.Drawing.Image.FromFile(Server.MapPath(upload_dir & img))
Line 43:    tumb_name = gettf(img)
Line 44:         

Source File: C:\inetpub\wwwroot\RC\dotnet_resize.aspx    Line: 42

Stack Trace:


[FileNotFoundException: C:\inetpub\wwwroot\RC\cl_upload\]
  System.Drawing.Image.FromFile(String filename, Boolean useEmbeddedColorManagement) +474803
  System.Drawing.Image.FromFile(String filename) +6
  ASP.dotnet_resize_aspx.__Render__control1(HtmlTextWriter __w, Control parameterContainer) in C:\inetpub\wwwroot\RC\dotnet_resize.aspx:42
  System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +268
  System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +8
  System.Web.UI.Page.Render(HtmlTextWriter writer) +29
  System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +57
  System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +100
  System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25
  System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1386



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Så vidt jeg kan se kører den .net 4


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