rename: no such file or directory

So why doesn't this rename work?

rename('../mdwgold/scripts/origineel.jpg','../mdwpictures/gpfmottenPic102236.jpg');

All I'm getting is an error saying: no such file or directory

I've also tried the line without quotes like this:
rename(../mdwgold/scripts/origineel.jpg,../mdwpictures/gpfmottenPic102236.jpg);
but it gives me the same error.

The directories do exist and are chmodded to 777.
So what's wrong with my code, or what's going on here?

What you're doing looks correct (single or double quotes should be OK ... also try double quotes) ...

rename("../mdwgold/scripts/origineel.jpg","../mdwpictures/gpfmottenPic102236.jpg");

I'm guessing ../ is wrong.
You're telling to go back one directory, is that correct?