g.w. carrera

This is probably a stupid question but on occassion, when
starting up the computer, an icon appears in the task bar
that is labled "MessageApp". I have no idea what it is,
what it applies to or how to get rid of it. Clicking on
the icon, with either the right or left mouse button,
doesn't do anything. It's appeared several times before
and eventually will stop appearing when the computer
starts up but it must be trying to tell me
something. "BUT WHAT!".
Thanks