Crashes when "e" is pushed

This ticket is invalid as it relates to a modded or 3rd party client/server.

• Any non-standard client/server build needs to be taken up with the appropriate team, not Mojang.

• Any plugin issues need to be addressed to the plugin creator.

• This site is for addressing issues related to the base unmodded MineCraft.

then how do i unmod my Minecraft?

How did you mod it ? Do it the other way round.

The mod is SinglePlayerCommands

okay, i took the mod out of my minecraft folder, but it still crashed when i push "e"

okay i will attach the latest crash report to the overall report

the latest crash report was just attached

Is Modded: Very likely; Jar signature invalidated

-> still invalid.

It is not enough if you "delete the mod out of the minecraft folder", you have to unpatch minecraft.jar.
Simpliest way to do: In the launcher click Options -> Force Update and start Minecraft.
Then you are running the unmodded Minecraft.
If the error persists, please attach a new crash report.

thank you