A couple (at least..there may be more) of Gotchas..
1) If you are using an elderly version of iPhoto then you have to download an iPhoto Upgrader program first. Then when you open Photos (which compared to iPhoto is a revoltingly trivial appalling lousy stupid duff program designed to be used by two-year olds) you will be asked which library do you want to open.
It is Default and not iPhoto library.
2) If you have any POP3 email accounts then quite likely that Sierra won't play nicely as many people have found. The advice given by many after searching is to delete the POP3 account from Sierra (which of course deletes your emails unless you export them).
But Zen Tech Support - being brilliant as usual - simply took me through setting up a different and more secure port. Bingo...it worked
1) If you are using an elderly version of iPhoto then you have to download an iPhoto Upgrader program first. Then when you open Photos (which compared to iPhoto is a revoltingly trivial appalling lousy stupid duff program designed to be used by two-year olds) you will be asked which library do you want to open.
It is Default and not iPhoto library.
2) If you have any POP3 email accounts then quite likely that Sierra won't play nicely as many people have found. The advice given by many after searching is to delete the POP3 account from Sierra (which of course deletes your emails unless you export them).
But Zen Tech Support - being brilliant as usual - simply took me through setting up a different and more secure port. Bingo...it worked