Error in batch pre processing.....

[swag72]

As is always the way, when you get new things, it never runs smoothly.

I have a new camera and so have done darks, bias and flats - All using SGP pro and each with the correct fits header of the particular type of file. While putting them all through batch pre processing, I am getting the error message 'Warning no correlation between the master dark and the target frames (channel 0)' In this case I wasn't using a master dark

What does this mean and how can I solve it? When I run the diagnostics it tells me everything is OK. I am really confused.....

[Carlos Milovic]

Have you inspected that image? Is there something wrong with it?
By the way, I see that you are using flats or very different exposure times (why?). Which is the length of your dark?

[hbeing]

I get the exact same thing, looked at all my darks, see no discrepancy, unless the temp variations (there are some) are causing it.