Call of duty 5:ERROR FATAL

Bonjour,
l'orsque j'ai terminer la mission anneau d'acier,apres le chargement,la mission suivante ne se lance pas.
voila se qu'il m'affiche:

Error: Could not load xanim "pb_crouch_hold_run_satchel".
Error: Could not load xanim "pb_hold_run_left_satchel".
Error: Could not load xanim "pb_hold_run_right_satchel".
Error: Could not load xanim "pb_hold_run_back_satchel".
Error: Could not load xanim "pb_hold_run_satchel".
Error: Could not load xanim "pb_sprint_hold_satchel".
Error: Could not load xanim "pb_crouch_hold_idle_satchel".
Error: Could not load xanim "pb_hold_idle_satchel".
Error: Could not load xanim "pb_prone_hold_satchel".
Error: Could not load xanim "pt_hold_prone_throw_satchel".
Error: Could not load xanim "pt_hold_throw_satchel".
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'0' is not a valid value for dvar 'bg_shock_viewKickPeriod'
Domain is any number from 0.001 to 1000
'0' is not a valid value for dvar 'bg_shock_soundFadeInTime'
Domain is any number from 0.001 to 1000
'0' is not a valid value for dvar 'bg_shock_soundFadeOutTime'
Domain is any number from 0.001 to 1

Direct3DDevice9::Present failed: Driver internal error

merci de me dire ce que cela veux dire.