HI Sebastian,

I have a DNN installation that I use for translation purposes and the language pack generated from that version (DNN520) is not uploaded in a different DNN portal (also DNN520). I am geting the same kind of error as  jungyong chae got (DotNetNuke.Services.Installer.Installers.LanguageInstaller.ReadCustomManifest).

Below is the error from the event log:

UserAgent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US) AppleWebKit/532.0 (KHTML, like Gecko) Chrome/3.0.195.33 Safari/532.0
DefaultDataProvider: DotNetNuke.Data.SqlDataProvider, DotNetNuke.SqlDataProvider
ExceptionGUID: 1ed1e797-c3ce-4b00-9d7b-5cd0ab9fd63b
InnerException: Object reference not set to an instance of an object.
FileName: 
FileLineNumber: 0
FileColumnNumber: 0
Method: DotNetNuke.Services.Installer.Installers.LanguageInstaller.ReadCustomManifest
StackTrace: 
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.Services.Installer.Installers.LanguageInstaller.ReadCustomManifest(XPathNavigator nav) at DotNetNuke.Services.Installer.Installers.FileInstaller.ReadManifest(XPathNavigator manifestNav) at DotNetNuke.Services.Installer.Installers.InstallerFactory.GetInstaller(XPathNavigator manifestNav, PackageInfo package) at DotNetNuke.Services.Installer.Installers.PackageInstaller.ReadComponents(XPathNavigator manifestNav) at DotNetNuke.Services.Installer.Installers.PackageInstaller.ReadManifest(XPathNavigator manifestNav) at DotNetNuke.Services.Installer.Installers.PackageInstaller..ctor(String packageManifest, InstallerInfo info) at DotNetNuke.Services.Installer.Installer.ProcessPackages(XPathNavigator rootNav) at DotNetNuke.Services.Installer.Installer.ReadManifest(Stream stream) at DotNetNuke.Services.Installer.Installer.ReadManifest(Boolean deleteTemp) at DotNetNuke.Services.Installer.Installer..ctor(Stream inputStream, String physicalSitePath, Boolean loadManifest, Boolean deleteTemp) at DotNetNuke.Modules.Admin.Extensions.Install.wizInstall_NextButtonClick(Object sender, WizardNavigationEventArgs e) at System.Web.UI.WebControls.Wizard.OnNextButtonClick(WizardNavigationEventArgs e) at System.Web.UI.WebControls.Wizard.OnBubbleEvent(Object source, EventArgs e) at System.Web.UI.WebControls.Wizard.WizardChildTable.OnBubbleEvent(Object source, EventArgs args) at System.Web.UI.Control.RaiseBubbleEvent(Object source, EventArgs args) at System.Web.UI.WebControls.LinkButton.OnCommand(CommandEventArgs e) at System.Web.UI.WebControls.LinkButton.RaisePostBackEvent(String EVENT_ARGUMENT) at System.Web.UI.WebControls.LinkButton.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String EVENT_ARGUMENT) at System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String EVENT_ARGUMENT) at System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) --- End of inner exception stack trace ---
Source: 

Sebastian,

I just tried to install a language pack created in DNN522 and still ran into this issue. Do you know whether full language packs will be supported once again or not?

Thanks in advance.