Hi, found the culprit. me
I had navigated to a folder of almost same name, had raw file canon cr2 in it !
however add photos now ok,
HOWEVER...metashape fails to align , 4 failed, yet photoscan did all of them
see email 11 july 15:46 where pscan 1.2.6 failed 12 and metashape 20 same settings. good qlty pics as well
Nothing to do with blame on pics as far as I can see. if it was then pscan would fail same or even more.
These this time being long and thin had d.o.f fall off, unavoidable yet pscan no probs.
Regards
Steve