I found the answer to this myself. for some stupid reason, when burning a project to hard disk, PWD still looks at the original disk size selected, although, of course, that makes no difference. So ANY burning to hard disk is limited to the max size a Bluray disc can handle. this sucks. I would be happy enough if the program showed a dialogue box with a message something like;this project wont fit on to the disc format originally selected, do you still want to go ahead? or something along those lines, or lets go for broke here, WHY if I select burning a project to a hard disk should PWD look at the disc format originally selected (something I cant avoid doing) ? Afterall, I may never want to drop it onto a portable disc, i may just want to keep it on the hard disk and stream it over my home network !!.