Merge pull request #1 from gblancogarcia/master

Files
Extra validation for the page, fixes possible crash.
Extra validation for the page, fixes possible crash.
Changed enumeration to fast enumeration to prevent a possible crash.
Changed enumeration to fast enumeration to prevent a possible crash, and added an extra validation for de index on the array.
Fix and issue with indexes on the fast enumerations.
Merge pull request #12 from 942v/master

Fixed possible crashes