I install DNN version 4.8.4 on a share hosting environment from package DNN_Install_4.8.4. At install process was no problem or error appear but when after finish the process by input Name & Password of Host and Admin account, they appear this dumb message:

DotNetNuke Error: - Version 04.08.04

An unhandled error has occurred.

I opened table EventLog in database and found some logging message at problem time. I can summary them in 2 message below:

1. First message:DotNetNuke.Services.Exceptions.PageLoadException: Object reference not set to an instance of an object. ---> System.NullReferenceException: Object reference not set to an instance of an object.     at DotNetNuke.Framework.DefaultPage.Page_Init(Object sender, EventArgs e)     at System.Web.UI.Control.OnInit(EventArgs e)     at System.Web.UI.Page.OnInit(EventArgs e)     at DotNetNuke.Framework.PageBase.OnInit(EventArgs e)     at System.Web.UI.Control.InitRecursive(Control namingContainer)     at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)     --- End of inner exception stack trace ---
2. Second message:DotNetNuke.Services.Exceptions.PageLoadException: Unhandled error loading page. ---> System.Web.HttpParseException: The file '/Admin/Skins/Logo.ascx' does not exist. ---> System.Web.HttpParseException: The file '/Admin/Skins/Logo.ascx' does not exist. ---> System.Web.HttpException: The file '/Admin/Skins/Logo.ascx' does not exist.     at System.Web.UI.Util.CheckVirtualFileExists(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.UI.BaseTemplateParser.GetReferencedType(VirtualPath virtualPath, Boolean allowNoCompile)     at System.Web.UI.BaseTemplateParser.GetUserControlType(VirtualPath virtualPath)     at System.Web.UI.MainTagNameToTypeMapper.ProcessUserControlRegistration(UserControlRegisterEntry ucRegisterEntry)     at System.Web.UI.BaseTemplateParser.ProcessDirective(String directiveName, IDictionary directive)     at System.Web.UI.TemplateControlParser.ProcessDirective(String directiveName, IDictionary directive)     at System.Web.UI.TemplateParser.ParseStringInternal(String text, Encoding fileEncoding)     --- End of inner exception stack trace ---     at System.Web.UI.TemplateParser.ProcessException(Exception ex)     at System.Web.UI.TemplateParser.ParseStringInternal(String text, Encoding fileEncoding)     at System.Web.UI.TemplateParser.ParseString(String text, VirtualPath virtualPath, Encoding fileEncoding)     --- End of inner exception stack trace ---     at System.Web.UI.TemplateParser.ParseString(String text, VirtualPath virtualPath, Encoding fileEncoding)     at System.Web.UI.TemplateParser.ParseFile(String physicalPath, VirtualPath virtualPath)     at System.Web.UI.TemplateParser.ParseInternal()     at System.Web.UI.TemplateParser.Parse()     at System.Web.Compilation.BaseTemplateBuildProvider.get_CodeCompilerType()     at System.Web.Compilation.BuildProvider.GetCompilerTypeFromBuildProvider(BuildProvider buildProvider)     at System.Web.Compilation.BuildProvidersCompiler.ProcessBuildProviders()     at System.Web.Compilation.BuildProvidersCompiler.PerformBuild()     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.UI.TemplateControl.LoadControl(VirtualPath virtualPath)     at System.Web.UI.TemplateControl.LoadControl(String virtualPath)     at DotNetNuke.Framework.DefaultPage.LoadSkin(String SkinPath)     --- End of inner exception stack trace ---

With the second message, I checked file '/Admin/Skins/Logo.ascx' to can sure about it existen and had code as same as original.