[PD] [expr] external crashing pd

[Kim Cascone]

my config:
=======
Linux Mint 14 Nadia (32bit) running MATE
Pure Data 0.43.4-extended
Kernel 3.5.0-48-generic
jackdmp 1.9.9

I have a couple of questions about the [expr] external:

I have an [expr] object that takes 1 frequency (as a float) and divide 
it by 9 different ratios then send the results to 9 different outlets - 
this seems to work fine

two situations are crashing pd:

- when I try to change an expression in the object, like multiply a 
ratio by 2 or something
it crashes pd

- when I attempt to create 10 ratio divisions with outlets (try adding 
one to the patch I've attached below) it crashes the app as well

is this a known bug?

-or-

what am I doing wrong?

I've attached both the crash log (reflecting 2 crashes) as well as the 
patch below

any help is appreciated and thanks in advance!
kim

=========
apport.log
=========
ERROR: apport (pid 19550) Fri May 16 11:48:56 2014: debug: session gdbus 
call:
ERROR: apport (pid 19550) Fri May 16 11:48:56 2014: apport: report 
/var/crash/_usr_bin_pd-extended.1000.crash already exists and unseen, 
doing nothing to avoid disk usage DoS
ERROR: apport (pid 19613) Fri May 16 11:56:33 2014: called for pid 
19555, signal 11, core limit 0
ERROR: apport (pid 19613) Fri May 16 11:56:33 2014: executable: 
/usr/bin/pd-extended (command line "pd-extended")
ERROR: apport (pid 19613) Fri May 16 11:56:33 2014: gdbus call error: 
Error: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name 
org.gnome.SessionManager was not provided by any .service files

ERROR: apport (pid 19613) Fri May 16 11:56:33 2014: debug: session gdbus 
call:
ERROR: apport (pid 19613) Fri May 16 11:56:33 2014: apport: report 
/var/crash/_usr_bin_pd-extended.1000.crash already exists and unseen, 
doing nothing to avoid disk usage DoS


===========
patch
===========
#N canvas 179 129 872 480 10;
#X msg 12 -119 62.64;
#X floatatom -43 54 8 0 0 0 - - -;
#X floatatom 11 54 8 0 0 0 - - -;
#X floatatom 64 53 8 0 0 0 - - -;
#X floatatom 118 53 8 0 0 0 - - -;
#X floatatom 172 53 8 0 0 0 - - -;
#X floatatom 226 53 8 0 0 0 - - -;
#X floatatom 279 52 8 0 0 0 - - -;
#X floatatom 333 52 8 0 0 0 - - -;
#X floatatom 387 52 8 0 0 0 - - -;
#X obj 12 -97 expr $f1 * 1/1 \; $f1 * 49/25 \; $f1 * 28/27 * 2 \; $f1
* 32805/32768 * 2 \; $f1 * 531441/524288 * 2 \; $f1 * 125/64 \; $f1
* 127/64 \; $f1 * 63/32 \; $f1 * 160/81 \;;
#X text 176 -79 <-- type "* 2" into one expression - this should make
it crash;
#X connect 0 0 10 0;
#X connect 10 0 1 0;
#X connect 10 1 2 0;
#X connect 10 2 3 0;
#X connect 10 3 4 0;
#X connect 10 4 5 0;
#X connect 10 5 6 0;
#X connect 10 6 7 0;
#X connect 10 7 8 0;
#X connect 10 8 9 0;