flat frame not applied?

[blackdragon72]

When I use batchprocessing, it gives the warnings:

** Warning: Invalid file name characters will be replaced with underscores in filter name: 'No filter'

** Warning: No flat frames have been selected to calibrate light frames (filter="No filter", binning=1, exposure=300.00s, length=12)

I do add flat file. Should it be applied automatically?

[blackdragon72]

Found the issue.

Since I use OSC camera, there is no filter. But by default, the script use NONE for flat, and No Filter for light. I had to use "add custom" to match the filter name.