GDB Error: bad window path name ".watchwin0"

[Gene Smith <gds at chartertn dot net>]

If I have Insight running for a while and do enough watches (just 
looking at a single simple variable at a time) I get the pop up error 
GDB Error: bad window path name ".watchwin0". If I press the "Stack 
Trace" button I see:

bad window path name ".watchwin0"
    while executing
"raise $_top"
    (object "::.watchwin0.watchwin" method "::ManagedWin::reveal" body 
line 5)
    invoked from within
"$obj reveal"
    (procedure "::ManagedWin::_open" body line 10)
    invoked from within
"_open WatchWin"
    ("eval" body line 1)
    invoked from within
"eval _open $class $args"
    (procedure "::ManagedWin::open" body line 3)
    invoked from within
"ManagedWin::open WatchWin"
    (object "::.srcwin0.srcwin.container.pane2.childsite.con" method 
"::SrcTextWin::addToWatch" body line 2)
    invoked from within
"::.srcwin0.srcwin.container.pane2.childsite.con addToWatch Size"
    invoked from within
".srcwin0.srcwin.container.pane2.childsite.con.src_menu invoke active"
    ("uplevel" body line 1)
    invoked from within
"uplevel #0 [list $w invoke active]"
    (procedure "tk::MenuInvoke" line 47)
    invoked from within
"tk::MenuInvoke .srcwin0.srcwin.container.pane2.childsite.con.src_menu 1
"
    (command bound to event)errorCode is NONE

I am unable to do further watches w/o restarting insight. This occurs on 
V6.8 w/linux fc8 and I think I have seen it with newer snapshots too.

-gene