List of Continuity errors in the Warlock series

The Warlock series, having been written over a large span of time has many (often obvious) continuity errors.

List of Erros

 * The first book, set in early 31st century, claims Fess to be 2000 years old. This would mean Fess was created circa 1000AD. There is speculation as to if this is a repeated typo.