LrC - Image 'Resetting' after heavy masking...

[schimmey]

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Good morning all,

I am editing an image and using masks. One of the masks is heavily edited with lots of subtractions. I still have more subtractions to do but, all of a sudden, any further subtraction results in the pause while the programme thinks it over and then it 'resets' the image back to zero - i.e. no base adjustments and no masks at all. The history doesn't reset though - so if I 'undo' one step it reverts back to the state with masks, but the same thing happens again when I try to subtract again.

Any advice greatly appreciated.

Many thanks.

Paul

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[erudolph]

Another really excellent place to seek advice would be the Lightroom Queen forums

[jaapv]

Lack of RAM, I suppose. 

[zeitz]

You don't say if you are working with a .dng file or a .jpg file.  Also you don't say if you are storing the edits in the .dng file or in an .xmp file.  My only guess, and it is a pure guess because I use Photoshop and not Lightroom and I always use .xmp files, is that there is some limit on the number of edits / layers that can be put in a .dng file.