That is a file problem. You should re-upload the original files again, overwriting the existing files. Something must have gone wrong during the original upload. The default files shouldn't have syntax errors.
Make sure you are uploading the files to the same location as the old files, thereby overwriting the old files. And look for any upload errors in your FTP client. FileZilla has a Failed transfers tab at the bottom.
You can also try uploading just the file that is named in the error message: