An application unhandled exception has raised:

System.IO.DirectoryNotFoundException: Could not find a part of the path 'C:\Users\admin\AppData\Local\Temp\'.
at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
at System.IO.File.InternalCopy(String sourceFileName, String destFileName, Boolean overwrite)
at System.IO.FileInfo.CopyTo(String destFileName)
at Icomancer.Functions.UploadIcon(String fileName, XElement xmlData, TransferrableFlags TransferrableFlag, Boolean ShowGUI) in H:\Icomancer\Icomancer\Functions.vb:line 2255
at Icomancer.frmCrafter.btnSave_Click(Object sender, EventArgs e) in H:\Icomancer\Icomancer\frmCrafter.vb:line 1072
at System.Windows.Forms.Control.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ButtonBase.WndProc(Message& m)
at System.Windows.Forms.Button.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

Please run icomancer as administrator and/or whitelist it in your antivirus. This exception raises when icomancer can't write to the temp folder, and that's because something is preventing it from doing it.