Jedi Crash - S1-E13
Continuity mistake: Anakin sends a ship to dock with Aayla Secura's stricken Jedi Cruiser to pick up everyone who's escaping. When the ship arrives, there are two clone pilots flying it. When Commander Bly gets to the bridge to turn on the deflector shields, one of the pilots has vanished. (00:04:52)
Jedi Crash - S1-E13
Continuity mistake: When the Jedi's ship is in danger of crashing into a star while in hyperspace, there is a brief shot where Rex's kama (kilt) is missing, while Ahsoka is arguing with Aayla about shutting down the ship's power. (00:07:05)
Answer: Dooku never accepted Ventress as his apprentice, as far as I know; he just kept her as his devoted personal assassin. In Phantom Menace, it is stated that there can be only two Sith at a time, to prevent a power struggle in the lower ranks. To accept Ventress as an apprentice, Dooku would have violated that rule.