I have the same problem:
Appearance > Editor > functions.php
I tried to put the script:
add_theme_support(‘post-thumbnails’);
whereever I put this code and press update file
the code disapeared !
I tried another method:
I downloaded function.php
inserted the code
and uploaded it again
and than I couldn’t log in to admin
I’ve got the error message same as Bidi.
Than I have to put back the original function.php
PLEASE HELP:
How can I put the upmentioned code in the function.php ?
Just to mention:
all this was done under windows host, if it’s metters something.
Thanks