It has several issues with the RayTrace engine and issues with the Libraries and issues with how it searches for files and many people are reporting inconsistant crashing and render lockups.

Pretty much all of these issues and more are being worked on by e-f, just how many will get fixed in SR1 has yet to be seen. Their message to me indicated that the RayTrace engine and library issues are taking fore front in their endevors.

So far I have tried now to Render FOUR scenes, not just a character on a blank color background but full scenes ranging from 80meg to 200meg and complete with background props, clothing, hair and mulitple characters - Poser 7 has froze on all four and refused to render them, however Poser 6 has opened and rendered all four successfully and at even higher render settings then I had set in Poser 7 (actually, at one point I lowered ray bounce to 1 and increased shadow bias to 1 and lowered pixel sampling to 3, and P7 still froze, but P6 had no trouble)

Also to Alpha Channel issue, I think maybe e-f now understands what the trouble is there...don't know if they intend on fixing it however.

So don't let others mis-guide you and say it works as advertised, the e-f engineers KNOW the bugs and that it is sub standard, or at least the ones they recognize so far. Actually as far as I can tell; it's a broken version of Poser 6