hi
a year ago, I was working on vegas 9 and being unable to render projects. the problem was never resolved despite frequent mails to tech suppoprt.. Now, a year later, I am trying to do version 2 of this same project, and receiving the same error message:
'vegas was unable to render xxx project' with no further info is little help, tho it seemed last year as if some sort of memory problem could be occuring. The only work around I found was to render thr project in regions.

I find it unbelievable that in this time Sony has not solved the problem. It is a well known problem that is discussed in the community...I saw one user write that he hoped that the 9.0d build would solve these problems. Apparently, it hasnt. I am rendering at 1648x768. With about 20 video tracks, but of these only 2-4 are concurrent. I use no effects other than the standard vegas ones. My machine is a macpro quadcore with 8g ram running vista64 bit via bootcamp. My other main machine, an i7 processor also with 8gig ram and vista64bit, falls over with the same non-informative error. We are attempting to render to Quicktime photojpeg max quality.

Thanks for any help.