Did you try exporting your ID file to idml?
DO I understand that certain pages won't export singly, but all others will? That points to some sort of problem with an object on those pages. First suspect would be any object they have in common, next would be a placed .eps file or possibly a placed PDF made from a non-adobe product.
If the problem isn't immediately evident, you can identify a specific object very quickly bey using "divide and conquer." Work on a copy of the file. Cut half the content of the page to the clipboard and try the export. If it works, paste in place, and remove half of what you removed the first time and try again. If the export doesn't work, paste in place and cut the other half and proceed. You should be able to islolate an object in very few steps this way.
yes you are quite right. I suspected that it must be something specific to a graphic or whatever. And it was. My documents and work files I always keep on a second drive. In putting a new C: Drive in there were folder and file permission issues that needed addressing. Not something I knew how to change and correct until yesterday! As soon as I got all the images with the correct permissions, I was then able to Export the pages. From some of the other postings about Export issues on the Adobe Forum, I would suggest those people probably have exactly the scenario I had.
Thanks for your help.