Delphi-XE6 upload files to FTP server broken, why?

Question

Delphi

I am writing an FTP client in Delphi-XE6 IDE. I am using the following code:

IdFTP1.Connect;
IdFTP1.ChangeDir(FolderName);
IdFTP1.Put(Indnum, Indnum);
IdFTP1.Disconnect;
Timer3.Enabled := True;
Timer4.Enabled := False;

In Delphi-7, the above construction worked fine (only after IdFTP11.Connect, more parameters had to be added). But when I used it in XE6, a problem arose - the files began to come to the server broken. Text files come either empty or with some kind of gibberish inside, pictures are loaded empty, they cannot be opened.