I gathered the info.
To solve the issue I followed these steps.
I) Move my Label in _Temporary_Model_ ;
II) Stop AOS, delete the _Temporary_Model_, delete all files in folder (C:\Program Files\Microsoft Dynamics AX\60\Server\\bin\Application\Appl\Standard) Delete all extensions .ali - .ald - .alc about my Label;
III) Delete from SQL DELETE FROM ModelElementLabel WHERE ModelElementLabel.Module = 'MyLabelPrefix';
IV) Clean auc (C:\Users\\AppData\Local) file about my user (I think this is not mandatory);
V) Start AOS and install my Labels twice and check by SQL query
SELECT * FROM ModelElementLabel WHERE ModelElementLabel.Module = 'MyLabelPrefix' if I correctly loaded (if I have the right values in Text field)
If I have more than one language, I repeat step V , Importand is to obtain in SQL Table ModelElementLabel the right values.
In my opinion, I seem to have had corrupt files.
Thanks all for advices.
