Put the summary of the bug you're having here
What I expected to happen was...:
to play the demo
What actually happened was...:
it was loading but then it crashed
Steps to Reproduce:
1. open up Minecraft Launcher (on Windows XP)
2. Log in and hit "Play Demo"
3. Let it load
Comments 4
Incomplete without crash report ([minecraft|http://hopper.minecraft.net/help/finding-minecraft-data-folder]/crash-reports/crash-<DATE>-client.txt). Please attach it so that we can diagnose your issue.
please tell me something helpful to do so that i can play the demo of 1.7.2