win2003+iis下配置asp.net网站“找不到指定的模块”？？？
win2003+iis下配置asp.net网站出错。。。。请教各位大大可能是什么原因造成的啊？？？？具体报错如下：


Server Error in '/LocalUser/ajj' Application.
--------------------------------------------

找不到指定的模块。 (Exception from HRESULT: 0x8007007E) 
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 

Exception Details: System.IO.FileNotFoundException: 找不到指定的模块。 (Exception from HRESULT: 0x8007007E)

Source Error: 

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.  

Stack Trace: 


[FileNotFoundException: 找不到指定的模块。 (Exception from HRESULT: 0x8007007E)]
  System.Reflection.Assembly.nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, Assembly locationHint, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, Boolean forIntrospection) +0
  System.Reflection.Assembly.InternalLoad(AssemblyName assemblyRef, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection) +211
  System.Reflection.Assembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection) +141
  System.Reflection.Assembly.Load(String assemblyString) +25
  System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String assemblyName, Boolean starDirective) +32

[ConfigurationErrorsException: 找不到指定的模块。 (Exception from HRESULT: 0x8007007E)]
  System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String assemblyName, Boolean starDirective) +580
  System.Web.Configuration.CompilationSection.LoadAllAssembliesFromAppDomainBinDirectory() +203
  System.Web.Configuration.CompilationSection.LoadAssembly(AssemblyInfo ai) +45
  System.Web.Compilation.BuildManager.GetReferencedAssemblies(CompilationSection compConfig) +193
  System.Web.Compilation.WebDirectoryBatchCompiler..ctor(VirtualDirectory vdir) +274
  System.Web.Compilation.BuildManager.BatchCompileWebDirectoryInternal(VirtualDirectory vdir, Boolean ignoreErrors) +37
  System.Web.Compilation.BuildManager.BatchCompileWebDirectory(VirtualDirectory vdir, VirtualPath virtualDir, Boolean ignoreErrors) +441
  System.Web.Compilation.BuildManager.CompileWebFile(VirtualPath virtualPath) +77
  System.Web.Compilation.BuildManager.GetVPathBuildResultInternal(VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile) +611
  System.Web.Compilation.BuildManager.GetVPathBuildResultWithNoAssert(HttpContext context, VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile) +91
  System.Web.Compilation.BuildManager.GetVirtualPathObjectFactory(VirtualPath virtualPath, HttpContext context, Boolean allowCrossApp, Boolean noAssert) +122
  System.Web.Compilation.BuildManager.CreateInstanceFromVirtualPath(VirtualPath virtualPath, Type requiredBaseType, HttpContext context, Boolean allowCrossApp, Boolean noAssert) +42
  System.Web.UI.PageHandlerFactory.GetHandlerHelper(HttpContext context, String requestType, VirtualPath virtualPath, String physicalPath) +32
  System.Web.UI.PageHandlerFactory.System.Web.IHttpHandlerFactory2.GetHandler(HttpContext context, String requestType, VirtualPath virtualPath, String physicalPath) +62
  System.Web.HttpApplication.MapHttpHandler(HttpContext context, Strin