Quick dumb question: All the images of the VSD an CR90a I find on the internet show them with two anti fighter dice, but on my cards they only have one. Is this an error with the German version or was it a last minute change?

The images are likely from the BETA. Both my VSD and CR90 have 1 blue die for anti-squadron.

EDIT:

The GenCon demo was the BETA version of the game. There have been some changes since then. One of them was the Anti-Squadron armament on some of the ships.

on Fantasy Flight's webpages, the images they show for both Corvette varients only depict one anti-squadron die. A variant of the Nebulon, the escort variant, depicts two die.