Indeed, I installed a somewhat newer Mac version, converted the old project, and now it sports a .scrivx file which opens the project in Linux. Life is beautiful. Thank you both so very much for your help.

Thank you very much for your reply. However, I don't have a .scrivx file in my bundle. I do have a file called "binder.scrivproj"; when I try to open it with the Linux Scrivener, it seems to think the file is corrupted (it opens just fine on the Mac). Should I be (normally) able to open th...

I have a large Scrivener project (.scriv) under Mac OS X, and I also have Scrivener installed on a system running Ubuntu. I would like to port the project from the Mac system to the Ubuntu system. Just copying the .scriv file and trying to open it in the Linux Ubuntu does not work -Scrivener sees it...