BPP inverts light image

[jcinpv]

I just updated to the latest release of PI.
I ran a new set of images (lights, darks, flats, bias) and discovered that the something in the BPP process is inverting the light image. As a result, instead of the flat removing the anomalies, they are added to the light.
What???

The attached image shows the flat master, one light frame, and the output of BPP.

I know, I have to retake my flats - I did a very poor job of setting my light panel at the right distance and didn't bother to check before continuing. Live and learn. But it still shows the horrible condition of the camera - which I'm sure I can rectify as well. I'm not as concerned about that as I am about why the light image is being inverted in the BPP process.

[pfile]

is this a DSLR camera? are you using old master flats/bias/darks?

if you are using masters from a DSLR camera created with a prior version of PI, you will need to re-create the masters. PI switched from DCRAW to libRAW for handling of DSLR images and these two packages interpret the images from the camera slightly differently.

rob

[jcinpv]

I found my error. I did not select "up bottom" for the fits images. Sorry.