Hi,
Having thought about this try the following first, hold down the alt+cmd keys and click the iPhoto icon in your dock
(as first screen shot). Hopefully you will see a new box appear just like my
(second) screen shot. Now check the last box rebuild database then Repair.
Sorry I do not use iPhoto Manager,
just have many friends that do and say it is great
. So could not give you a walk through.
EDIT:
Looking at the rebuild screen shot of IPM you just choose the default library and click the rebuild button as the last screen shot, sorry I can not be more helpful regarding this software, but from what friends say it does a really good job.