[Insight-users] what makes " -1.#IND" ?

[DiLLa HaNdiNi]

Hi,

what does it mean if I got iteration result during registration as something
like this:

0   -0.122143   [0, 0, 0, -1.#IND, -1.#IND, -1.#IND]

What makes the "-1.#IND" ?
I can't get rid of it.

Thanks.

Regards.

Dilla
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