ECC just made an update that changes some of the fundamentals of trade sign functions. The biggest change is that signs that use the same item on the second and third lines (ie. money for money trade signs, gravel for gravel, any item for any of the same item) will no longer be creatable. The change should not break any money for money or similar trade sign that already exists, and they should still be functioning, however you will no longer be able to make new ones. ECC will not be providing support in the case that these trade signs no longer function properly. Any other bugs created by this update should still be reported.