I don't understand why the stb crash with green screen on call option 'VTI DEVICE MANAGER'

My config :
VU+SOL VTI 3.2
on back USB ther is a USB key 8 Gb configured sd \media\usb\ ro store picons and epg.dat (crossepg plugin).

Th.

where is the file crash.log in the stb ?

here the crashlog

crash.log

[CrossEPG_Auto] poll
action -> SetupActions ok
[VTIPanel] open menu SystemToolsMenu linked to Outils Sytème VTI
[VTIPanel] fallback to default translation for Services
reused converter!
reused converter!
allocating new converter!
action -> WizardActions right
unknown action WizardActions/right! typo in keymap?
action -> WizardActions up
unknown action WizardActions/up! typo in keymap?
action -> WizardActions ok
reused converter!
reused converter!
allocating new converter!
It's now Sat Mar 3 23:44:35 2012
[timer.py] next activation: 1330814775 (in 99998 ms)
It's now Sat Mar 3 23:44:35 2012
[timer.py] next activation: 1330814775 (in 99996 ms)
[EPGC] start cleanloop
[EPGC] stop cleanloop
[EPGC] 5471588 bytes for cache used
action -> ColorActions red
[VTIE2CrashlogpurgeMenu] red
reused converter!
reused converter!
Console: executing in run 0 the command: echo Removing selected Enigma2 Crashlog; rm -rf /media/hdd/enigma2_crash_1330762945.log
child has terminated
pipes closed
poll: unhandled POLLERR/HUP/NVAL for fd 52(16)
action -> WizardActions back
action -> SetupActions cancel
action -> WizardActions back
action -> SetupActions ok
[VTIPanel] open menu SystemInfoMenu linked to Infos Système VTI
reused converter!
reused converter!
allocating new converter!
action -> InfobarEPGActions showEventInfo
unknown action InfobarEPGActions/showEventInfo! typo in keymap?
action -> ShortcutActions red
action -> SetupActions ok
[VTIPanel] open menu SystemToolsMenu linked to Outils Sytème VTI
[VTIPanel] fallback to default translation for Services
reused converter!
reused converter!
allocating new converter!
action -> WizardActions ok
Screen <class 'Plugins.SystemPlugins.DeviceManager.plugin.DvHS'>((), {}): <type 'exceptions.OSError'>
Traceback (most recent call last):
File "/usr/lib/enigma2/python/mytest.py", line 239, in create
return screen(self, *arguments, **kwargs)
File "/usr/lib/enigma2/python/Plugins/SystemPlugins/DeviceManager/plugin.py", line 50, in __init__
File "/usr/lib/enigma2/python/Plugins/SystemPlugins/DeviceManager/plugin.py", line 882, in __init__
File "/usr/lib/enigma2/python/Plugins/SystemPlugins/DeviceManager/plugin.py", line 905, in readPartitions
File "/usr/lib/enigma2/python/Plugins/SystemPlugins/DeviceManager/plugin.py", line 917, in isLinux
OSError: [Errno 12] Cannot allocate memory
Traceback (most recent call last):
File "/usr/lib/enigma2/python/Components/ActionMap.py", line 46, in action
res = self.actions[action]()
File "/usr/lib/enigma2/python/Plugins/SystemPlugins/VTIPanel/plugin.py", line 527, in go
File "/usr/lib/enigma2/python/mytest.py", line 313, in open
dlg.isTmp = True
AttributeError: 'NoneType' object has no attribute 'isTmp'
(PyObject_CallObject(<bound method ActionMap.action of <Components.ActionMap.ActionMap instance at 0x1e8b9e0>>,('WizardActions', 'ok')) failed)
getResolvedKey config.plugins.crashlogautosubmit.sendAnonCrashlog failed !! (Typo??)
resolve: resolve ${sysconfdir}/enigma2/settings
resolve: -> /etc/enigma2/settings
getResolvedKey config.plugins.crashlogautosubmit.addNetwork failed !! (Typo??)
resolve: resolve ${sysconfdir}/enigma2/settings
resolve: -> /etc/enigma2/settings
getResolvedKey config.plugins.crashlogautosubmit.addWlan failed !! (Typo??)
resolve: resolve ${sysconfdir}/enigma2/settings
resolve: -> /etc/enigma2/settings
]]>
</enigma2crashlog>
<pythonMD5sum>
<!-- Cannot allocate memory -->
</pythonMD5sum>
</crashlogs>
</opendreambox>

I solve the problem by creating swap file on USB key (\media\usb\) and i free memory (delete files channel info and channel provider used by ccam but not necessary for the treatement CCcam)