Can anyone tell me how to fix this? When I try to copy Documents to Drop Box, I am told "The operation cannot be completed because one or more required itmes ca't be found. Error code -43." What is it that can't be found?
Normally, that means something inside of Documents, which I assume is your home folder's Documents folder, is corrupted and can't be copied. Try dropping them a few at a time until you locate the borked file(s). FWIW, I don't use Dropbox, so can't answer anything related to that.
Thanks much. I did precisely as you recommended. Oddly, it did not reject anything I fed it in small doses. After dropping everything in that way, I tried putting the whole thing again and it went! Somehow th problem had corrected itself.