Modpacks Won't Open

[Roysten Suelf Abs]

For some reason none of my modpacks will open. They act like they will, the launcher disappears but comes right back. I've set the ram allocation to the full 7 gigs,  tried uninstalling and reinstalling minecraft and technic, and I've tried rolling java back to 7 and then returning to 8, nothing seems to work. Any ideas would be useful. Log to follow : http://pastebin.com/pVnutK6R thank you

[JaariAtmc]

14 hours ago, Roysten Suelf Abs said:

For some reason none of my modpacks will open. They act like they will, the launcher disappears but comes right back. I've set the ram allocation to the full 7 gigs,  tried uninstalling and reinstalling minecraft and technic, and I've tried rolling java back to 7 and then returning to 8, nothing seems to work. Any ideas would be useful. Log to follow : http://pastebin.com/pVnutK6R thank you

How very strange that it couldn't allocate that RAM...

[B#347] 2016/11/06 01:27:04 [INFO]  # There is insufficient memory for the Java Runtime Environment to continue.

[B#347] 2016/11/06 01:27:04 [INFO]  # Native memory allocation (mmap) failed to map 7516192768 bytes for Failed to commit area from 0x0000000600000000 to 0x00000007c0000000 of length 7516192768.

Because that's what the error says.