I have the same problem encountered in this question (
https://community.spiceworks.com/topic/2130093-ssis-package-flat-file-destination-blank-row-at-end-of-file) except unlike the OP that was able to throw the problem back to their customer, I must actually solve it.
Here is a snip of the OP's original question:
The original question is how to get rid of the extra return carriage line created when generating a flatfile in SSIS. THe best answer chosen (from: Gerard Mainardi)is a great answer for small files (15MB file took 3 mins), but the performance is awful for a large 600MB file (our file took 4 hours before killing it), which is exactly what I produce for my vendor. I have been manually deleting that last line ever since the vendor statedthe extra linecaused ingestion issues into their system.
Would someone be able to help me...