My first recommendation , coming from the psychology aspect of my learning, Punch a wall, Or something hard......get that frustration out......Or you could just break something..whatever tips your boat..
Am I wrong in saying that you stated that it worked before? but not now? if so, What have you changed since then? anything major?
Is your creative software up to par , and up to date? have you tried updating that software?
and my first question, but I decided to save it for last, wha'ts your computer like? Age wise, And spec wise... Might solve some issues here
I personally used to use a creative zen ...Used to meaning I basicalyl broke the sound on it, So now its just growing dust on my shelf.... and I never ran into any issues such as this, Which makes me wonder ....
Oh One more thing...
did you ever press the click here button on that error message? If so where did it lead you