Every since I installed the new Dropbox on my Macbook, the list of where my files are stored in Excel has gone wonky. For example, when I open Excel and look at the list of files I could open, the file 'spanish vocab' is shown as being stored here:
Macintosh HD/Users/[removed]/Library/CloudStorage/Dropbox/mabword/Spanish
When I try and open the file from this menu, I get the attached message.

However, when I use Finder to locate the file it shows it stored here:
Dropbox/mabword/Spanish
Using Finder, I can open the file.
I'm not sure what is going on or how to fix it. Any suggestions?
Thanks for your help.