server crash on killing last alien

[kurja]

from log:

2012/05/26 20:34:01 Team 1's round started!
2012/05/26 20:34:24 Team 1 ended round
2012/05/26 20:34:24 Team 7's round started!
2012/05/26 20:34:25 [STATS] k (Afra Luo) kills alien (Uonak T Zruujk) with Single Shot of shotgun2_slug_ammo (entnum: 120)
2012/05/26 20:34:29 ********************
2012/05/26 20:34:29 ERROR: LE_NotFoundError: Could not get LE with entnum 5897 (src/client/battlescape/events/event/actor/e_event_actorstats.c:43)

2012/05/26 20:34:29 ********************
2012/05/26 20:34:31 Shutdown server: Server crashed.
2012/05/26 20:34:31 Unload the game library
2012/05/26 20:34:31 Disconnecting...
2012/05/26 20:34:31 Client stream was closed
2012/05/26 20:34:31 Remove pending event 23
2012/05/26 20:34:31 Remove pending event 23
2012/05/26 20:34:31 Remove pending event 23
2012/05/26 20:34:31 Remove pending event 23

last alien had it by the way of reaction fire, brief mousefreeze, back to geoscape. complete log attached.

[kurja]

same thing happened again, only this time it was not the last alien.

2012/05/27 00:16:55 Team 1 ended round
2012/05/27 00:16:55 Team 7's round started!
2012/05/27 00:16:58 [STATS] k (Shakiko Tao) kills alien (Wwzhs Vzs Wzshf) with Inferno of flamer_ammo (entnum: 150)
2012/05/27 00:17:03 ********************
2012/05/27 00:17:03 ERROR: LE_NotFoundError: Could not get LE with entnum -1 (src/client/battlescape/events/event/actor/e_event_actorstats.c:43)

2012/05/27 00:17:03 ********************
2012/05/27 00:17:07 Shutdown server: Server crashed.
2012/05/27 00:17:07 Unload the game library
2012/05/27 00:17:07 Disconnecting...
2012/05/27 00:17:07 Client stream was closed
2012/05/27 00:17:07 Remove pending event 23
2012/05/27 00:17:07 Remove pending event 23
2012/05/27 00:17:07 Remove pending event 23
2012/05/27 00:17:07 Remove pending event 23

[kurja]

created https://sourceforge.net/tracker/?func=detail&aid=3530009&group_id=157793&atid=805242