I can´t open any versions of minecraft. I only can play on the version 1.8.1. If I change it, it crashes
I only wanted to play on version 1.7.9
What actually happened was, that it crashed
Steps to Reproduce:
1. I changed the version from 1.8.1 to 1.7.9
2. I opened Minecraft
3. After I click on a multiplayer server, it crashes
Related issues
Comments

⚠️ Your Minecraft version is outdated. We currently take issues for version 1.8.x of the game.
Thank you for your report.
However, your ticket has been resolved as a duplicate.
This issue has been linked to the original bugreport: MC-38527. You can find or add further information on that report.
Please search before reporting any bugs, as it's likely that one exists already.