IIS Site Hosted in Web Role can not start up

Hello Team,

We occured a problem when deploying application to web role 

the WaIISHost can not start up and there are two error information in event log :

Application: WaIISHost.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: System.IO.FileLoadException
Stack:
   at Microsoft.WindowsAzure.ServiceRuntime.Implementation.Loader.RoleRuntimeBridge.<InitializeRole>b__0()
   at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object)
   at System.Threading.ThreadHelper.ThreadStart()

Faulting application name: WaIISHost.exe, version: 2.3.1198.663, time stamp: 0x53115226
Faulting module name: KERNELBASE.dll, version: 6.3.9600.17031, time stamp: 0x53089862
Exception code: 0xe0434352
Fault offset: 0x00000000000068d8
Faulting process id: 0x6d4
Faulting application start time: 0x01cf89326cfa011a
Faulting application path: E:\base\x64\WaIISHost.exe
Faulting module path: D:\Windows\system32\KERNELBASE.dll
Report Id: ad418c8f-f525-11e3-80bc-00155dd153c7
Faulting package full name: 
Faulting package-relative application ID: 

if we miss some files when deploying the environment and how to check what files are missing. 

thanks in advanced.