Wen in Windows Editors coding nachsehen.
WinMerge braucht integer [ 65001 ]
65001 does refer to the UTF-8 character set. You would need be make sure that your page (and any includes) are saved as UTF-8 if they contain any characters outside of the standard ASCII character set.
htaccess nicht in utf8 speichern!
Drauf achten vorab gibt später weniger stress, immer Original Files Backup und aufbewahren hilft auch 
