Hello Xu Could you send a minimum working example (WME) of your .lyx file? My guess > is that you might be able to generate the same error by deleting most or > all of your document. > > My only suggestion for now is to start a new LyX document, and then copy > from your old to your new. This will copy all of the content but will not > copy some of the underlying things in the .lyx file. This would be easy to > try and could solve your problem. >
I have copied all the text into a new document and it all seems to be working again. Which is great relief as I am very short of time trying to get this document finished for Tuesday. Thanks, Graham
