Lately, when I am using Poser 7 (windows XP, poser version 7.02.123), it crashes to desktop with zero errors. There does not seem to be any particular file causing it to do this, it's completely random and happens almost everytime I am working in poser. It does not crash to desktop unless there is some kind of figure or prop in the scene. Anyone have any ideas?

Have a look at this thread:

http://www.renderosity.com/mod/forumpro/showthread.php?thread_id=2739486

I think it applies only to files including V4 (possibly A4, too, seeing as they are sisters under the skin).

Thanks for the link. It's not just happening with V4 sadly. I tested it with a new V4 and it still crashed even after applying the changes :(  A friend suggested I update my video drivers so I'm trying that. Poser 7 in particular may have some issues because of Open GL. It just so happens NVIDIA updated the drivers for my video card today.

If your update doesn't work..  Just a few questions:

When was the last time you cleaned out disk drive junk?  -should do it every day especially temp files including cookies.  Some of this junk may load up RAM 

I have found that with these quirky problems simple disk drive maintenance works most of the time and if it doesn't you need to do it anyway.

When was the last time you defragged your computer-I do mine every week.

Rationale, over time, portions of software programs (and everything else) tend to scatter out through your hard drive.  This makes it hard for the hard drive' pickup heads to assemble everything that the software requires to operate properly.  You need to collect all that stuff and place it in a more orderly fashion and together.  That is what defragging does.

How long have you had Poser on (during the day).  Have you been switching between Poser and other software programs.  Before you start on a Poser project, you should restart your computer (wait a minute before bringing your computer back on line).  Rationale:  A few software programs don't flush out of  RAM when closing and you need to power down so that the RAM has a chance to discharge.  Jan

Try the fix suggested by infinity10 in this thread HERE - "If using nVidia graphics accelerator card, switch off anisotropic, texture filttering and all other special effects for your card, using the nVidia management software."

I had the same problem & after using this fix, my crashes have stopped.