Flyman35. You are very lucky pilot. You lost PACK 1 on the ground shortly before the flight and the failure could be linked to your previous manipulating with the PACK 2. Let's assume that you lost PACK1 in cruise. So, as minimum you will have "cold" flight (you will fill it first) and you will be forced to make much more brain storm and on transit stop you have to solve problem with PACKs. The question is why wasn't it done during first transit stop? Nothing can be minor on this a/c.
I am positive about being open minded, do a brain storming but don't forget about flight safty (you are not alone in the a/c).
Waiting impatiently for the Airbus reply on the guiones' post.