crash

Put the summary of the bug you're having here

What I expected to happen was...:
Describe what you thought should happen here
i thought it would just load up minecraft
What actually happened was...:
Describe what happened here
i logged in with my account and it just sent me back to the launcher and said it crashed
Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. ...i had a new mod installed called 'seysrog'
3. ...and i had a new profile for the launcher