Tekkit crashes back to launcher after attempting to load Singleplayer/Multiplayer

[Rasberry11]

This problem happened after allocating more ram into Minecraft, and installing Java 7 Update 79 (64-bit) on my computer. I have been trying to reinstall tekkit, deleting .technic and .techniclauncher files, and trying to lower the amount of ram being put into usage in the modpack. Does anyone have a solution to this? 

Here's a link to the crash report on pastebin:

http://pastebin.com/cWX7D7S6

[Akkupack]

On the very first rows of the crash log it is very clear that Java ran out of memory. Try increasing your memory allocation to 1.5GB.