Erro ao iniciar swat 4

Toda vez que eu tento jogar o swat 4 ele da o seguinte erro:

No Label

Crash Time: 01/10/11 04:31:20

OS: Windows NT 6.1 (Build: 7600)
CPU: GenuineIntel PentiumPro-class processor @ 2202 MHz with 2047MB RAM
Video: SiS Mirage 3 Graphics (5280)

UserName: Lucas
ComputerName: LUCASPC
Application location: C:Program FilesSierraSWAT 4

SWAT Build Number: 34688

Failed to enter Entry: Can't find file 'Entry'

History: UGameEngine::Init

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