I will offer what I experienced this week in case it is related.
For the first time I captured a few narrowband images (M16) and also for the first time tried running WBPP. Took Bias, Darks and Flats to match the Light setting including temp.
Using ASI1600MM up to 5 minute exposures there was a lot of amp glowin the Darks and Lights. The actual signal was weakest using the Sii filter.

I ran WBPP with all the processing steps through integration checked. It chugged along for a while and then terminated processing the Sii filter with a message along the lines of:

"Select background area with a higher level of signal, it could have high level of clipped data."

I did not know what to make of that so went looking for how to run WBPP and came across Adam Blocks tutorial.
www.adamblockstudios.com/categories/wbpp

One section is on setting a Pedestal value so in WBPP I set the value to 100 and then the WBPP script could run to completion. That is as far as I got yesterday, with 3 master images that sort of seem okay.

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