Error Updating SSIS package to 2014 due to script component
VS 2010/VS 2012 => SQL Server 2012. 

VS 2013 => SQL Server 2014. 

VS 2015 => SQL Server 2016 (for now, soon they'll have the ability to target SQL Server 2012+)

So, you either need to redo your imports using SSDT for VS 2013/SQL Server 2014 or wait until they deliver the next release candidate for SQL Server which will have the ability to target specific releases of SSIS