Tarkin and continuity image - Alliance to Restore Canon (ARC)

Delta's recent attacks on TCW's have inspired me to look in to continuity errors that exist and I feel it is important to point out that continuity errors existed long before the show and The Clone Wars is not the source of all continuity evil. The Clone Wars has been written about and put in games and put in comics more than almost any other era and all of that material is crammed in to a 3 year time span.

Here is one example according to wookiepedia

A major continuity issue involving Tarkin is his involvement in the Ghorman Massacre. The original source for the incident, the Rebel Alliance Sourcebook, portrayed Tarkin as an Imperial naval captain who was promoted after the incident. The Essential Chronology specified that Tarkin was promoted to Moff. Later sources, however, established that Tarkin was promoted to Moff before the Empire was even created, and served as governor of the Seswenna sector immediately prior to that promotion. This article has retained the substance of the Ghorman story, but placed it prior to Tarkin's promotion to Grand Moff, maintaining its context within the early establishment of the Empire.

So it is in fact not The Clone Wars show that created his story as a contradiction. I wonder how many other continuity errors are out there that were not created by the show. I shall do some research.