[graham.hobart (Graham stevens)]

I have asked this question before and I got pointed to the manual- which I have read and have also followed the stacking guide step by step so any other suggestions please.
When I try and stack LRGB frames from the QSI I can make calibration masters, then add files and when the steps to stack come along it whizzes through and then only stacks one L frame. It rejects all the other frames.
I don't know what I am doing wrong.
I am using the auto select stars for stacking but my frames aren't currently plate solved.
I didn't nominate a "master " L frame but high lighted all in the group to stack- is this why?
If I have 30 frames to stack it stacks one and then records 29 errors.
I am sure I am following the manual correctly.
Help please
Graham.