Originally Posted by
Nepentha
I'm sure what happened is they programmed in a 0 for plots no one bid on. Most likely when the patch went live, code got messy and suddenly there's a chance you can get 0 as a result. When that happens it bugs out, and says no one participated (as it is programmed to do in the event no one did). It's more common on FC houses because there are fewer bidders than personal houses. For houses with only 1 bidder, well, 50% chance you roll a 0 and it bugs.
Hopefully SE will address this sooner rather than later. Don't reclaim your gil yet, sit tight and wait. It sucks, but it is what it is.