Hello,

I upgrade one web site from 5.6.3 to 6.1.1. It seems all OK but when I go to module settings I met below error:

Error: is currently unavailable.DotNetNuke.Services.Exceptions.ModuleLoadException: An item with the same key has already been added. ---> System.ArgumentException: An item with the same key has already been added. at System.ThrowHelper.ThrowArgumentException(ExceptionResource resource) at System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add) at System.Linq.Enumerable.ToDictionary[TSource,TKey,TElement](IEnumerable`1 source, Func`2 keySelector, Func`2 elementSelector, IEqualityComparer`1 comparer) at System.Linq.Enumerable.ToDictionary[TSource,TKey,TElement](IEnumerable`1 source, Func`2 keySelector, Func`2 elementSelector) at DotNetNuke.Modules.Admin.Modules.ModuleSettingsPage.BindContainers() at DotNetNuke.Modules.Admin.Modules.ModuleSettingsPage.BindData() at DotNetNuke.Modules.Admin.Modules.ModuleSettingsPage.OnLoad(EventArgs e) --- End of inner exception stack trace ---

I checked almost all kinds of modules and met the same issue. It's odd because I upgrade several web sites only one has the issue. Any ideas?

Thanks

Lei

Hello cathal,

Thanks for your reply.

Finally I found the reason of the issue and fixed it. There is a old container folder from DNN3 or DNN4 named "Classic" and there is a container control named "default.aspx". I renamed it to "default1.aspx" and it works.

Lei