Thanks Scott. Makes sense, although I had not sync'd with dropbox I did not realise that I had the iPad linked to dropbox when I linked the macbook.
I followed your instructions and still got a conflict. I even unlinked everything from dropbox, then deleted all the highlight files from dropbox, then did an update to the offending file on the macbook and sync'd manually to force the updated file to sync to the iPad/iPhone.
Even then it produced a conflict file. However I have deleted that and it seems to be OK now.
I want to clarify my understanding of how the syncing to dropbox works (for laptop/iPad/iPhone). Could you check the following statements/questions and confirm whether they are correct.
If I have automatic syncing set on my laptop then when I update a user file from my laptop then that file will automatically sync to dropbox within at most 10 minutes (as long as the computer stays on).
If a user file is updated onto dropbox from my iPad/iPhone then that will automatically sync to my laptop if I have the automatic syncing preference set.
If I have updated dropbox from my laptop then in order to get that update onto my iPad/iPhone do I have to run the dropbox sync on the IOS device or can it happen automatically?
If I update a user file on the IOS device does it automatically sync to dropbox or do I have to run the sync manually?
If I update the same file on two devices without having sync'd in the mean time then I will get a conflict.