gg_buylevel and es 2.0.0.250i beta 2

[Warbucks]

Ever since upgrading eventscripts to the latest beta(2.0.250i Beta 2) I have been experiencing crashes on one of my servers that uses this addon. I removed the addon and have been crash free since. This is from the error_log:

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  Exception caught: 24/06/2009 @ [11:17:52] [Occurences: 5]
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Traceback (most recent call last):

  File "C:\gcmservers\ggturbo\cstrike\addons\eventscripts\es.py", line 204, in triggerEvent
    self.EventListeners[eventname][listener](event_var)

  File "C:\gcmservers\ggturbo\cstrike\addons\eventscripts\gungame\custom_addons\gg_buylevel\gg_buylevel.py", line 54, in player_death
    pPlayer = playerlib.getPlayer(ev['attacker'])

  File "C:\gcmservers\ggturbo\cstrike\addons\eventscripts\_libs\python\playerlib.py", line 1277, in getPlayer
    raise e

UseridError: '0' is an invalid userid