CKEditor clearing all SESSION vars

I am using CKEditor in the backend of a website and stragely enought it wipes all of the SESSION vars when it gets loaded... I have no clue as to why this happens.

I have used it before and it's never done this. Nothing seems to be new or changed from previ开发者_JAVA技巧ous times it was used.

Any idea what it could be? Could it be server-specific?

Thank you.

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What a load of crap... the reason for this is specifying:
$config['contentsCss']=array('inexistent.css','existent.css');
Where inexistent.css does not exist and existent.css does...

That makes a lot of sense, if you can't find a CSS file just flush the whole $_SESSION variables.