I am havning the exact same problem with b-team pack, though I reverted my java back to what I had before, and it still wont work? Have you had any success on fixing the problem, and if so can you share what you did. Thanks.
EDIT: I figured out with my problem was I needed to revert back to java 8u11 instead of 8u20, maybe that is what you need to do. go here and check section "Java SE Runtime Environment 8u11" section and download windows x86 offline -jre-8u11-windows-i586.exe and windows x64 (if you have 64bit) - jre-8u11-windows-x64.exe
This fixed my problem, might fix yours.
