Same here - 3 Castles taped together (no extra padding), so the bottom one (with all that weight) certainly got banged up a bit while traveling cross country (at least it made my picking which one to open/build easier).
One of the sets had an open bag in it, and the one that I opened (to build) had a bag that was open, but unspilled. Pretty much, If you put a finger on both sides of a bag and rub gently, it will open. Going forward, a new bagging/sealing process will likely be needed (as I would expect some bags to open in transit, using the current sealing method).
Knowing how collectors are, I am sure that they must be having to deal with lots of complainers. I am more than pleased overall, as this is a brand new venture for them (untested, etc) - so some issues are to be expected, but I am sure that some people are being much less forgiving.
By the way, I am up to the bag 3's - and really enjoying this great set!