If you're still looking for an answer on this, I published a blog post on this topic earlier today:
http://www.timmitchell.net/post/2013/08/05/continue-package-execution-after-error-in-ssis/
Tim Mitchell, Microsoft Data Platform MVP
Data Warehouse and ETL Consultant
TimMitchell.net | @Tim_Mitchell | Tyleris.com
ETL Best Practices