Try this thread in the S3 forum. I was able to reset the the options to MTP and it would work for a while, and then revert back to "installer". I'll keep playing with it and see if I can get a more permanent solution. I'm on MJ7 rooted, not sure if that makes a difference. If you're on another build, it may work for you.
Changing USB settings
"We are all here, because we are not all there"
Phone: Samsung Galaxy S4 (SCH-I545)
Tablet: Samsung Galaxy Tab 2 7.0 (p3113) w/ Slim ROM 4.2
Retired but not forgotten: HTC Incredible 2