text: Matt: Can you open this link <file_other>?
  Sandra: no, why?
  Matt: I can open it, but my client can't, dunno why
  Matt: can you try to do it in Mozzila?
  Sandra: No, i can't open it, it says content unavailable <file_photo>
  Matt:  no idea what's wrong... 
  Sandra:  I'm afraid, i can't help you with that...
  Matt: nvm, thanks anyway!
target: Matt's client can't open the file Matt sent him. Sandra can't help Matt with that.