No Desmis,
now RT crashes when detail window goes beyond 500% and wavelet and refine is enabled and I move the refine slider
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Ciao @dafrasaga, Salut @jdc ,
Manjaro/KDE RT Version: 5.8-2535-g051145850
still crashes when one follows Gabriele’s steps.
Have fun!
Claes in Lund, Sweden
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I will look tomorrow 
jacques
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Hello
Excuse my bad english.
I push a change 8e9e397 in branch “waveletcrash”
I think (I hope) the crash is solved…
But an explanation.
To work wavelet needs a minimum space to realize the decomposition, for each channel L*, a*, b*
The minimum size (in the preview window in pixels) for each level
- level 10 = 1024x1024
- level 9 = 512x512
- level 8 = 256x256
- level 7 = 128x128
- level 6 = 64x64
In this case (related crash) we are at level 6… I have added this level…
But beware, if you have settings wavelet to level 7 or above, now the system will not crash (I hope), but process for this level will be ignored.
As a result, either your setup (like mine with a separate screen, and no left panel and you can examine up to level 10) allows it, or you have to limit the zoom. Usually up to 300% or 400% you shouldn’t have any problems viewing level 7
jacques
Hi @jdc,
I compiled the waveletcrash branch but it crashes again 
What I do:
- Open the image
- set the neutral profile
- open a detail window
- zoom in at 500%
- enable wavelet and sub-refine
- move the refine slider
- it crashes
Very difficult for me to find…because with your settings…no crash.
But I have crash in other case…and I think I solved it, and probably it will solve your case
commit 344735bb8
Jacques
Hi @jdc,
I think you hit the culprit…
now it seems to work as would be …
Good 
OK, I will merge
Thank you
merge
jacques