The specified module could not be found

[Guest]

I'm getting killed by this error message on TWO different machines at a
client's site. Not just one machine, TWO. The web app is written in 2.0,
and the install package has been confirmed to work on a test machine. Any
ideas? The exception is thrown after my web app has begun initialization.
The details:


Event Type: Error
Event Source: XXXXXX
Event Category: None
Event ID: 5
Date: 8/1/2006
Time: 1:38:26 PM
User: N/A
Computer: WS14-250OEOMBE
Description:
Timestamp: 8/1/2006 6:38:26 PM
Message: An exception has bubbled up to the highest level and was caught in
Global.asax:
Category: Exceptions
Priority: 8
EventId: 5
Severity: Error
Title:An Unhandled Exception was caught
Machine: WS14-250OEOMBE
Application Domain: /LM/W3SVC/1/Root/XXXXX-1-127989311038906250
Process Id: 3284
Process Name: c:\windows\system32\inetsrv\w3wp.exe
Win32 Thread Id: 356
Thread Name:
Extended Properties: Stack trace - at
System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String
assemblyName, Boolean starDirective)
at
System.Web.Configuration.CompilationSection.LoadAllAssembliesFromAppDomainBinDirectory()
at System.Web.Configuration.CompilationSection.LoadAssembly(AssemblyInfo
ai)
at
System.Web.Compilation.BuildManager.GetReferencedAssemblies(CompilationSection compConfig)
at
System.Web.Compilation.WebDirectoryBatchCompiler..ctor(VirtualDirectory vdir)
at
System.Web.Compilation.BuildManager.BatchCompileWebDirectoryInternal(VirtualDirectory vdir, Boolean ignoreErrors)
at
System.Web.Compilation.BuildManager.BatchCompileWebDirectory(VirtualDirectory
vdir, VirtualPath virtualDir, Boolean ignoreErrors)
at System.Web.Compilation.BuildManager.CompileWebFile(VirtualPath
virtualPath)
at
System.Web.Compilation.BuildManager.GetVPathBuildResultInternal(VirtualPath
virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean
allowBuildInPrecompile)
at
System.Web.Compilation.BuildManager.GetVPathBuildResultWithNoAssert(HttpContext
context, VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp,
Boolean allowBuildInPrecompile)
at
System.Web.Compilation.BuildManager.GetVirtualPathObjectFactory(VirtualPath
virtualPath, HttpContext context, Boolean allowCrossApp, Boolean noAssert)
at
System.Web.Compilation.BuildManager.CreateInstanceFromVirtualPath(VirtualPath
virtualPath, Type requiredBaseType, HttpContext context, Boolean
allowCrossApp, Boolean noAssert)
at System.Web.UI.PageHandlerFactory.GetHandlerHelper(HttpContext context,
String requestType, VirtualPath virtualPath, String physicalPath)
at
System.Web.UI.PageHandlerFactory.System.Web.IHttpHandlerFactory2.GetHandler(HttpContext
context, String requestType, VirtualPath virtualPath, String physicalPath)
at System.Web.HttpApplication.MapHttpHandler(HttpContext context, String
requestType, VirtualPath path, String pathTranslated, Boolean useAppConfig)
at
System.Web.HttpApplication.MapHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean&
completedSynchronously)
Inner Exceptions follow -
Nest level 0 of type System.Configuration.ConfigurationErrorsException - The
specified module could not be found. (Exception from HRESULT: 0x8007007E)
Nest level 1 of type System.IO.FileNotFoundException - The specified module
could not be found. (Exception from HRESULT: 0x8007007E)