All above where uploaded via Core ftp and are all there, but still no change.
The files can all be there if the problem is caused by a corrupted or damaged file. It doesn't have to be missing. The text you're seeing is the constant. It is appearing because the language file or files that define that constant have problems of one sort or another.

Go to your admin/tools/developer's toolkit and search using the exact way one of those constants is appearing. This will tell you the file that is supposed to define them.