In my tree I have a half brother by my father from a previous marriage he is only entered to my father and his previous wife. and has not been linked to my father and mother so I believe the number of half siblings should read 1 but it reads 2 and where ever half siblings occur in my tre the number is always double the number that actually exist. I have tried rebuilding cache files and then reopening reunion but this makes no change I am running latest versions of software and yosemity any ideas please it has stumped me cheers Jim Petty