Foreach File enumerator is empty- Sequence Container

I've a SSIS package running in SQL Server 2012. The package is doing mirroring 2005 SQL DB into 2012 SQL (Backup and Restore).

I am trying to do all the DB restore in a single SSIS Package using Sequence container and Foreach loop container. If I run the Sequence container separately it works fine, but if I use Precedence Constraint to connect the Sequence Container, I got the below error on the second Sequence Container's Foreach loop. Expression used in the foreach loop are retrived from variable

The For Each File enumerator is empty. The For Each File enumerator did not find any files that matched the file pattern, or the specified directory was empty.

Any help in this regard is highly appreciated.

Thanks