iphoto from external hard drive won't open on another macbook
My iphoto wont open from my external hard drive on my other MacBook. It says: The photo library will need to be upgraded to work with this version of iphoto. Your photo library will not be readable by previous versions of iphoto after the upgrade.
1) Why do I need to upgrade?
2) Will I still be able to open this external HD on my old macbook?
When I click upgrade it says: there is a problem accessing one or more files in your iphoto library. Do you want iphoto to repair permissions for this library for you?
3) What does this mean?
4)Can I open this external hard drive iphoto library on a Dell laptop or will it always have to be on a Mac?
Thank you for your help!
MacBook (13-inch Early 2008), Mac OS X (10.6.8)