SSIS 2012 does not succeed , but there is no error.

One of the SSIS 2012 strange behavior question put up on forums - Please check here :

http://social.msdn.microsoft.com/Forums/sqlserver/en-US/6130d2e1-0c2e-47e0-930a-a3745e03a944/fake-errors-within-ssis-package?forum=sqlintegrationservices