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Details:
System.ArgumentException: Parameter is not valid.
at System.Drawing.Bitmap..ctor(String filename)
at Cms.Thumbnail.MakeThumb(String imageFilename) in C:\Users\Ian\Documents\Projects\Squash\Cms\thumb.cs:line 16
at LocalCms.Editor.Thumb.Page_Load(Object sender, EventArgs e) in C:\Users\Ian\Documents\Projects\Squash\Leicestershire2024\Cms\Editor\Thumb.aspx.cs:line 23
at System.Web.UI.Control.OnLoad(EventArgs e)
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)