Finally, I've found the problem the entries in the table "AbpLanguages" were in double
Hello, I upgraded Abp to 0.9.7 So i get this message:
An exception of type 'System.ArgumentException' occurred in mscorlib.dll but was not handled in user code
Additional information: An item with the same key has already been added.
And Visual Studio selects >@L("Logout") in >header.cshtml
Please, Help!!