removed the annotation style error handling in favour of a centralized(in the main) method based system


git-svn-id: http://umple.googlecode.com/svn/trunk@3975 6ebf9d09-8eb1-0036-9d08-68c07d1b990a
fixed build?


git-svn-id: http://umple.googlecode.com/svn/trunk@3976 6ebf9d09-8eb1-0036-9d08-68c07d1b990a