unable to load world

Whenever I run 1.8 releases or prereleases, I was unable to access my saved worlds in Minecraft. Later, I realized I couldn't create any new worlds.

Of course, upon clicking my saved worlds, I expected them to open without any issue, I really needed to make videos and wanted to test pre 1.8.2.

When I opened my worlds, they would generate, but then Minecraft would stop responding and windows would shut the program.

1. Open Minecraft
2. Select a world/make any new one
3. move around
4. Experience crash