Hi Heidari, I see. Why do you change the name of the folder in the core?? It is not suppose to do so. Which folder do you renamed?? Gideon m.heidari wrote: > Thanks for your attention I do your solution but my problem is exist. > > When I change name of some folder in core of typo3 this error generate. > > > > Regards, > > M. Heidari >