Thank you for your reply, Rob. But the problem is not that. As mentioned, I have been facing this problem only during the last month or so. Before that, the files used to open normally, with a blue background (due to CLS filter). A simple color calibration uses to remove the blue.
I am trying to open original RAW light frames. The histogram is so stretched that the STF does not work, even if I unlink the channels. The CTRL+A produces odd results both with linked or unlinked channels.
And as I said, I have already worked with those files last year. My PIwas ok and they used to open normally. I have the final processed image. But I kept the original RAW light frames and now they appear with that green tint (with linked channels) or with horrible colors (with unlinked channels). the same happens with any new image I take.
Any help?
Thank you!