What does it error mean, how to solvet this
Could not load file or assembly 'NetTopologySuite, Version=1.7.3.31740, Culture=neutral, PublicKeyToken=f580a05016ebada1' or one of its dependencies. The system cannot find the file specified.
source at Desktop Edition
at ThinkGeo.MapSuite.DesktopEdition.Overlay.Draw(GeoCanvas canvas)
at ThinkGeo.MapSuite.DesktopEdition.WpfMap.x03e3d48bcfe7bb6c(IEnumerable`1 xa6f0db4f183189f1)
at ThinkGeo.MapSuite.DesktopEdition.WpfMap.xff5b27c00f9678c2(RectangleShape x178b193eec228e6e)
at ThinkGeo.MapSuite.DesktopEdition.WpfMap.xe3cee4adb9c72451()
at ThinkGeo.MapSuite.DesktopEdition.WpfMap.x9ac8c50f434f4b39(Int32 xb565f4681f05557a)
at ThinkGeo.MapSuite.DesktopEdition.WpfMap.Refresh()