before the update the fence shadow would show up correct it looked like sun coming though the wires and showing all the correct shadows now the shadows are solid do i need to update something
(on GMT exporter) double-check "shadows" options, that you have "caster" and "textured" checked and re-export fence. Also make sure that you have setup fence material blending (or chroma) correctly. Good practice is also setup "Shadow Out" range to the object before export... Cheers!