well, indeed it turned me into madness. quite efford to upgrade, took quite long step to uninstall 6.0, updating daz studio and installing the content. first, trying to re-render old scene from 6.0 in hdri, it was good as advertised by daz. then, when using it to make a scene, my joy gone. when imported the obj files i usually do from other 3D software, i surprised (and quite panic actually) to see the mesh was flat black without color. i recheck it again and again, all obj turned black in color. this was never happened before in any version of bryce, except this 6.1 only. after trying to fool around trying to mix & match plugin form 6.0, i gave up. uninstall 6.1, revert back to 6.0 again, reinstalling 6.0 again and it was quite painfull.
i check daz forum to found nothing about it, then 24 hours afterthat, someone post the same problem as me. it was submitted as bug then.
oh well, i think i'll stick with 6.0 until 6.2 released