Originally Posted by
warreng24
The "-codeshare" and "nocodeshare" tags do not work with the new Matrix.

I believe there should be a preceding /, ie, "/ nocodeshare" or "/-codeshare". Please check if that's what you used. As a general rule, I'd suggest that in addition to posting here, we should report such problems to ITA via the comment link on the results page.
My only complaint left with Matrix2 is the lack of 300 mile radius search that so useful in tight situations. This is why I keep going to Matrix1.