So far from what I have seen and read as well is the 8.4 beta is having serious issues, especially for those not running 64bit Windows 7. I have not tested it with Poser Pro 2010 like Mazak has, but it seems OK with Poser Pro 7 though.

Hopefully those with issues will get a patch soon or like was mentioned they may just wait and release 8.5 instead. I think the beta has not gone well at all for many users and hopefully it will get worked out soon.

Jeff

Development on: Mac Pro 2008, Duel-Boot OS - Snow Leopard 10.6.6 & Windows 7 Ultimate 64bit, 2 x 2.8 GHz Quad-Core Intel Xeon , 10GB 800 MHz DDR2 RAM, NVIDIA GeForce 8800GT.