Reported by Richard Levitte, Apr 6, 2011

Steps to reproduce the problem:
1. cd YourFavoriteWorkspace
2. run monotone-viz
3. press "Refresh"

Expected result:

A refresh of the display

Actual result:

The monotone-viz windows disappears, and the following is displayed 
in the terminal window:

  The program 'monotone-viz' received an X Window System error.
  This probably reflects a bug in the program.
  The error was 'BadWindow (invalid Window parameter)'.
    (Details: serial 4912 error_code 3 request_code 10 minor_code 0)
    (Note to programmers: normally, X errors are reported 
asynchronously;
     that is, you will receive the error a while after causing it.
     To debug your program, run it with the --sync command line
     option to change this behavior. You can then get a meaningful
     backtrace from your debugger if you break on the gdk_x_error() 
function.)

I tried it in ocamldebug, and could get the following:


Lost connection with process 20527 (active process)
between time 4010000 and time 4020000
Restart from time 4010000 and try to get closer of the problem ? (y 
or n) y
...
Time : 4012418 - pc : 755344 - module View
787     s.w#set_default_response `VIEW<|a|> ;
(ocd) bt
Backtrace:
#0  Pc : 755344  View char 23605
#1  Pc : 787712  App char 3875
(Encountered a function with no debugging information)


The monotone-viz that I did this with is revision 
c3fdb3af1c7c89989c7da8062bb62203f2aaccf0