Problem launching Minecraft

Put the summary of the bug you're having here

What I expected to happen was...:
Describe what you thought should happen here
What I expected to happen was for it to launch smoothly
What actually happened was...:
Describe what happened here
What actually happened was, it launched, brought up the whole "finding update" thing and then a huge error was typed into it and stated "FATAL ERROR: java.lang.UnsatisfiedLinkError: no unpack in java.library.path
Please fix the error and restart"
Steps to Reproduce:
1. Open a Minecraft shortcut
2. *Seems to do it on its own"
3. ...