This message means that a FC 66 block has been found that has no input attached to it. You can ignore it because we are improving our processing to differentiate between spare blocks that are okay because they have Spec 1 set to 5, and others that are not.
--Post Processing drawing 3200431X.CAD Module 3,20,04 Block 1524 FC 66 does not have a wired input.
This error can be built directly into Hyperview. For more information, see the article Building error reports into the M14.