migrated photo library is inaccessable
Upgraded to El Capitan and attempted to migrate photos. I try to open up the migrated photos library (776.5 GB) and when I do I get a message saying
"Cannot open migrated photos."
The content of the iPhoto library “iPhoto Library” has already been migrated to Photos. Open Photos to view your library or use a compatible version of iPhoto to open this iPhoto library."
I open the photos app and select all photos and click info and I see it is only 57.4GB. I am unable to access the other 700GB of photos. Has anyone else had this issue?
iMac, OS X El Capitan (10.11.1)