If you don't have this only the Errata shapefile and database will load and you will have to manually add your base data. We are sorry but the NTDB license agreement restricts us from distributing our corrected data so you will have to re-implement the changes described yourself. It is possible some of the errors reflect not a problem with the source data but rather glitches in the translation process itself. This web page is only periodically rebuilt, thus the shape and database files will always be more current than this page. What's New page whenever any updates are published.
New contributions are welcome.
If anybody with those skills wants to take over management of the bug package, please do. For example halfway up a mountain slope the contours begin decending instead of ascending. Most of these are on tile borders, with the notable exception of 116J08 where the entire sheet was encoded in 10m intervals instead of 20m. The bugs package also describes changes we've made which can't really be called bug fixing.