Same problem here, with Jedi Sentinel and Juggernaut.

Same problem here, but my loading screen is black with only the cursor visible, the real loading screen flashes only when switching between full screen and windowed mode. My graphic card is fully updated (NVIDIA GeForce GTX 650 2GB GDDR5) and the game worked perfectly until now I'm a subscriber, I have 14 characters and lots of items on sale on the market, so it makes me VERY angry to not be able to play for days. Please report if anyone knows why this happens and how to fix it Thanks