Dear HarryI don't use styles, have none defined either, so I'm not sure I can do as you ask very intelligently. Most of my work is with files under 100k but I do manipulate larger files when assembling a manuscript. I have had trouble with tables, where I found I have to take great care to make sure they stood alone with a line above and below, and with interactions between tables and footnotes if I created a table and then added a footnote. This was always because I had forgotten to set up the footnote style first. Having learned how to manage these issues I very rarely have problems now (unless I forget the above).Paul On 21/06/2012 22:30, Harry Binswanger wrote:If you are willing to experiment, take a long document and put a lot ofs in for styles that are not defined (via a preceding for that style). Then see if you can close and re-open that file or if you get a crash. I have that problem (among others) with files of 100K. I will try to see what I'm doing in footnotes that causes the crashes. On 21/06/2012 18:12, Harry Binswanger wrote:Do you do footnotes much? Do you ever try to go to expanded mode while editing a footnote?Harry Like Bill I have very little trouble with NB9. I use footnotes all the time and often exit in expanded mode. It works for me. Best wishes Paul