A work around I found for a 476 page book was to simply page through until you found the offending page then extract all pages (select save as individual pages) then recreate the file. Hopefully you have a clean file that you can use to insert the missing or offending pages. This was the only way I could a file that became corrupted while the author was inputting edits to the layout. The Author was using the free reader version so the "enable for commenting in reader" function had been used. The file would not allow me to save it in any way.
In my scenario it worked...good luck.

found another, free, repair program but it found "no errors". It seems that I have 3 related problems:

1."The document could not be saved. There was a problem reading this document (14)."

2."Invalid annotation object."

3."The document could not be printed." &
"There were no pages selected to print."

I had the same problem and lost a full day of work.

All of my documents have been created with Acrobat 9 Pro running Windows XP. I continue to have the problem (invalid annotation object) so I just save often and save under another name. I haven't found a successful fix. I have found that 9 Pro is a very unstable product when compared to the previous version (with which I never had a problem). It is constantly crashing.

Bill