After install the module and I hit the return my DNN instance crashed. My server is 2008 r2 x64 with 2008 SQL

Could not load file or assembly 'DotNetNuke.Modules.DreamSlider.DLL' or one of its dependencies.  is not a valid Win32 application. (Exception from HRESULT: 0x800700C1)
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.BadImageFormatException: Could not load file or assembly 'DotNetNuke.Modules.DreamSlider.DLL' or one of its dependencies.  is not a valid Win32 application. (Exception from HRESULT: 0x800700C1)

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:

[BadImageFormatException: Could not load file or assembly 'DotNetNuke.Modules.DreamSlider.DLL' or one of its dependencies.  is not a valid Win32 application. (Exception from HRESULT: 0x800700C1)]
   System.Reflection.RuntimeAssembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks) +0
   System.Reflection.RuntimeAssembly.InternalLoadAssemblyName(AssemblyName assemblyRef, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection, Boolean suppressSecurityChecks) +567
   System.Reflection.RuntimeAssembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection) +192
   System.Reflection.Assembly.Load(String assemblyString) +35
   System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String assemblyName, Boolean starDirective) +123

[ConfigurationErrorsException: Could not load file or assembly 'DotNetNuke.Modules.DreamSlider.DLL' or one of its dependencies.  is not a valid Win32 application. (Exception from HRESULT: 0x800700C1)]
   System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String assemblyName, Boolean starDirective) +11568160
   System.Web.Configuration.CompilationSection.LoadAllAssembliesFromAppDomainBinDirectory() +485
   System.Web.Configuration.AssemblyInfo.get_AssemblyInternal() +79
   System.Web.Compilation.BuildManager.GetReferencedAssemblies(CompilationSection compConfig) +337
   System.Web.Compilation.BuildManager.CallPreStartInitMethods() +280
   System.Web.Hosting.HostingEnvironment.Initialize(ApplicationManager appManager, IApplicationHost appHost, IConfigMapPathFactory configMapPathFactory, HostingEnvironmentParameters hostingParameters, PolicyLevel policyLevel, Exception appDomainCreationException) +1167

[HttpException (0x80004005): Could not load file or assembly 'DotNetNuke.Modules.DreamSlider.DLL' or one of its dependencies.  is not a valid Win32 application. (Exception from HRESULT: 0x800700C1)]
   System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +11700896
   System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +141
   System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +4869125

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Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.272 v

To resolve this, the app pool used must be set to true as follows:

1. Inside IIS (7) click on Application Pools.

2. Find the Application Pool that is configured for your web application in the list.

3. Select it, then click Advanced Settings on the right.

4. Second setting in the list: Enable 32-Bit Applications - must be set to True.