I have tried to switch on localization on my site. After switching it on, and following the steps to get started at http://dotnetnuke.nl/Portals/16/downloads/documenten/DotNetNuke%20Module%20Localization%20Guide.pdf I now cannot open the page localization for my pages. Instead I get an error:

Error: is currently unavailable. DotNetNuke.Services.Exceptions.ModuleLoadException: Sequence contains more than one matching element ---> System.InvalidOperationException: Sequence contains more than one matching element at System.Linq.Enumerable.Single[TSource](IEnumerable`1 source, Func`2 predicate) at DotNetNuke.Modules.Admin.Languages.CLControl.DnnPages.Page(String locale) in e:\ka72\beta\DesktopModules\Admin\Languages\CLControl.ascx.cs:line 749 at DotNetNuke.Modules.Admin.Languages.CLControl.BindAll(Int32 tabID) in e:\ka72\beta\DesktopModules\Admin\Languages\CLControl.ascx.cs:line 299 at DotNetNuke.Modules.Admin.Tabs.ManageTabs.BindCLControl() at DotNetNuke.Modules.Admin.Tabs.ManageTabs. (EventArgs e) --- End of inner exception stack trace ---

Also, when logged in as administator, every page in my menu is duplicated (The menu is double-long)

I have only two languages, en-US (default) and fr-FR.

I've backed out all the changes. I had to disable French, then in Admin/Languages I had to click the button to remove localization ("Disable Localized Content"?). I still had a bunch of duplicate pages that I had to delete one by one in the Page Management area. (So, if I had a page called "Locations" I also had one called "Locations (fr-FR)")

After that I tried switching on localized content and only localizing one page. When I tried that, a similar problem occurred.

1. Click "Enable Localized Content"
2. Then leave the "make all pages translatable" checkbox unchecked and click the next "Enable Localized Content" button.
3. So far so good. My URL includes en-us. I go to my Locations page.
4. On the Edit Page menu, pick "Page Localization"
5. On the popup screen, click "Make Page Translatable"
6. Localization window shows up, but there is only en_US localization visible in the window. No fr-FR.
7. Now my menu has a "Locations" page and a new "Locations (en-US)" page that is identical.
8. Switch my language to French using the little globe icon.
9. Now on my menu, Locations disappears and I have a new item "Locations (en-US) (fr-FR)"
10. I go to that page, select Page Localization, and then I get this error:[L]Error: is currently unavailable. DotNetNuke.Services.Exceptions.ModuleLoadException: La séquence contient plusieurs éléments correspondants. ---> System.InvalidOperationException: La séquence contient plusieurs éléments correspondants. à System.Linq.Enumerable.Single[TSource](IEnumerable`1 source, Func`2 predicate) à DotNetNuke.Modules.Admin.Languages.CLControl.DnnPages.Page(String locale) dans c:\LocalWebsites\dnnka72\DesktopModules\Admin\Languages\CLControl.ascx.cs:ligne 749 à DotNetNuke.Modules.Admin.Languages.CLControl.BindAll(Int32 tabID) dans c:\LocalWebsites\dnnka72\DesktopModules\Admin\Languages\CLControl.ascx.cs:ligne 299 à DotNetNuke.Modules.Admin.Tabs.ManageTabs.BindCLControl() dans c:\LocalWebsites\dnnka72\DesktopModules\Admin\Tabs\ManageTabs.ascx.cs:ligne 258 à DotNetNuke.Modules.Admin.Tabs.ManageTabs.BindLocalization(Boolean rebind) dans c:\LocalWebsites\dnnka72\DesktopModules\Admin\Tabs\ManageTabs.ascx.cs:ligne 230 à DotNetNuke.Modules.Admin.Tabs.ManageTabs. (EventArgs e) dans c:\LocalWebsites\dnnka72\DesktopModules\Admin\Tabs\ManageTabs.ascx.cs:ligne 1523 --- Fin de la trace de la pile d'exception interne ---

The languages table lists the two languages. en-US has NULL as the FallbackCulture. fr-FR has blank as the FallbackCulture. Other than that it looks ok. The tables PortalLanguages and PortalLocalization buth have two records in them, one for each language.

Here's the data from my Tabs table for the Locations page. Most records have NULL for the CultureCode at present.