Warning (512): cake_model cache was unable to write

Hi, I keep getting these warnings and i cant fix them. I am not sure what other information to provide. I set app/tmp dir to chmod 777 and I have cpanel.so i cant get into console screen I

I still get this problem Warning (512): cake_model cache was unable to write 'default_aptutori_a....' to Apc cache [CORE/Cake/Cache/Cache.php, line 323]

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