OT: dropbox question

[joe at actionline.com]

Until recently, I had a dropbox icon on the start panel of my main Linux
Mint computer that instantly opened dropbox when clicked.

Recently, it changed (I did not knowingly change it) so that a click on
it did nothing, but I discovered that a right click on the icon opened
several options, including "Open dropbox folder" (see this screen
capture):  http://www.upquick.com/temp/dropbox.jpg

Today, I added the dropbox "app" to my new Linux Mint laptop to sync
dropbox and I followed the usual procedure to add the start menu dropbox
icon to the panel.  Now, as you can see, there are two dropbox icons, the
newest of which does nothing and I can't figure out how to get rid of it.

What do I need to do to restore the previous situation where I have just
one Dropbox icon on the panel and a single click on it opens dropbox?