Hi,
Why does PI reject the master flat frame that was created using the IC and II tools ? When I try to use the master flat in the BPP script I get this message:** 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=449.00s, length=12).
I am using the latest version of the PI.
Thanks for your help.
A.G
