Hello i have i problem i bought the alien dlc in Playstation store on a bundle (with all the other dlc's) but when i get to the space ship and get abucted something weird happens cause when they start cutting in you and the screen should turn white it frezes instead and here's the weird thing the cheif surgeon still blinks and once in while starts levitating a feet off the ground and then quickly gets back on the ground i can still pause and load another save but i've done this five times now and it keeps doing it!
Information i do have the right bles code and aiding the outcasts worked fine (though it started lagging for a few seconds when you got out of general chase's tent)

Did you play the other DLCs or just load them? IIRC, New Vegas has an issue on the PS3 where you can only play 2 of the DLCs per character or the save gets wonky. Not sure on this game.

If this is the first DLC that you are trying, then try a reinstall. Next, try a new character, just for testing, so archive your other one if you want to keep it.