Since VS/SSDT 2015 allows development of SSIS packages from 2012 forward I am using VS/SSDT 2015 for my SSIS development now. I have some up with an interesting problem and I have not been able to find the solution. When I target SSIS 2014 I can't debug script tasks, I get a "cannot attach the vsta debugger" error. I do not get this error when I target SSIS 2012 or SSIS 2016, only SSIS 2014. I have tried doing a repair of my SSDT installation and that didn't work. The only SQL instance I have installed is 2014.