Put the summary of the bug you're having here
What I expected to happen was...:
Describe what you thought should happen here
What actually happened was...:
Describe what happened here
Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. ...
3. ...
Environment
OS: Windows 8.1 (ver 6.3, arch amd64)
Java: 1.7.10_25 (by Oracle Corporation)
Launcher: Minecraft Launcher 1.6.5 (bootstrap 4)
Minecraft: 1.7.5 (updated Wed Apr 02 03:00:00 PDT 2014)
Downgrading is not, was never and will never be officially supported. If you started your instance with 1.8 once, don't downgrade, and make a seperate instance for 1.7 or 1.8.