Quote - Should I understand you are one of the Poser developpers?

Yes. > Quote - If yes, do you have any explanation why this happens in Poser 6 SR2?

Without reproducing an identical case on my system, I can only speculate. > Quote - And any means to get this fixed (by e-frontier)?

Please understand that I will leave announcements about future company and product plans to the product management and PR people. > Quote - If Poser allocates >= 1.5 GB while preparing a render, as soon as the little progress window switches to "Rendering", Poser 6 enters some kind of loop; The hourglass cursor dissapears, but Poser still uses 100% the CPU, without doing anything (waited for days - nothing).

One of the things happening in the "Rendering" step before the first bucket is drawn is the creation of the raytracing acceleration structures. If the scene renders fine without raytracing, that might be an indication of where to look. It could help to uncheck "visible in raytracing" for objects about which you know that they will not appear in raytraced reflections or shadows. As said above, this is just a guess. If you have a scene with which this problem can be reproduced reliably, I suggest you send a bug report to e frontier tech support so that this issue gets tracked and eventually ends up on the right desk.