Doesnt work shadows in build using Dual Lightmaps

Hi guys, Problem: All works perfect in Unity (dynamic shadows with Dual Lightmaps, bakeds and dynamic shadows) but when i make a build for Web player, shadows missing. If i make build for PC all works fine. What it could be? Maybe problem with web player parameters and it goes with fast render mode (no shadow)? See attached images to feel difference and parameters windows. Thank you