When launching live update it displays performing 1 of 13 downloading. It gets to 8% and crashes every time.
As bcm652 correctly, told you, the Live Update hasn't crashed, it will only update products you had installed so, the only way to see all steps performed, is if you have all of them installed at the same time.
Since the Live Update doesn't have anything to do other when it has finished other than exiting (it doesn't do anything else other than updating everything), it will automatically quit, instead of annoying you a useless confirmation dialog. This behavior has been asked by users, who wanted to run the Live Update as part of an automatic batch. If you want to know what's going on and have more control, you can use the FSDT Installer, which is the same program, just with a different interface.
Also when boarding the FBW A320 , only the front cargo doors open for baggage loading.
That of course doesn't have anything to do with GSX, and it's caused by the aircraft not having modeled the rear cargo doors with an opening animation. If the door doesn't exists, GSX can't fix that.