Substance materials missing in webplayer?

None of my substance materials seem to show on the webplayer version.. What needs to be done to get substance materials to show for web player?

Also, for some reason, the webplayer output has a Unity 3 Beta watermark. I am using v3.4.2 (but I have 3.5 installed as well) - it looks like the 3.5 webplayer export feature overwrote the 3.4.2?!

Update - re-downloaded 3.4.2, uninstalled 3.5, reinstalled 3.4.2. Webplayer no longer shows beta watermark, but the substance materials still do not load!!!