After struggling for the past 2 days to make a Blu-Ray .ISO file from Encore CS 5.1 and only getting "Code 25 Out of space messages", I made a Blu-Ray Folder and it worked perfectly. I then burned it using Roxio Toast 11 and it burned great. I tested it and everything works fine.
I will be making a Blu-Ray Folder from now on.
There is some kind of bug in Encore CS 5.1 that makes it almost impossible to make a Blu-Ray .ISO file.
I wish I had know that 2 days ago before I started trying to make an .ISO file.
Oh Well, You Learn something new everyday..