Possibly save 1 hour of your time: I got this error after making some changes to packages.
I replace with version control one and still got this error. So I then look at other changes I have made.
I created lots of stuff. I have the luxury to revert my code based on source control. And the error goes away.
Later on as I add my code back, I discover the error has to do with SMTP connection manager used for sending email. I linked this connection manager to Send Mail Task Editor.
There is a bug when you setup your SMTP connection manager at the project level.
It will work if you change it to the package level.
After you check your version number using Add/Remove Programs, you can compare your version here at
I am running
- SSDT 17.2 for Visual Studio 2015
Build number: 14.0.61707.300