That should be the path to your connection file... like: ../Connections/yourconnection.php
The other message is from missing email include files. They probably aren't getting copied over. You can just create a new blank page and apply the "Send email message" server behavior to get the files created and then upload the webassist/email server behavior to fix that one.
I'll look into these for fixes in the next update. Thanks for bringing them to my attention.