This error could happen when there is no OpenCL installed, for example. If you mean openCL messages from cgminer, of course. Publish your screenshots, please.

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Firstly, I have to warn you that Novacoin is considered to be a scam by many people, this due to pre-mined coins by its creator which he can sell at any time to make profit.
Firstly, I have to warn you that original author of this lines is incredible liar and paid faggot. Truth as it is.

You are free to choose what to believe, but don't let them lie to you so blatantly.