Unable to update to 10.5.7

[evan g]

I've been at 10.5.6 for while now, and back when it tried to update, it said it failed to update to 10.5.7. I tried again today, and the same thing happened. I was able to update other stuff, just not the OS. I have a 2 GHz Intel Core 2 Duo iMac. Anyone know the solution?

 

[iGuardian]

Try a combo update.