End Portal Crashes Without Fancy Graphics

Having fancy graphics on will fix the bug thanks to Mega_Spud for telling me. I was going to remove the addition but credit is a thing so...

^{Addition by [Mojang] Mega_Spud (Jay Wells)}

This is a known issue that occurs when Fancy Graphics are Off

First major bug. If you have fancy graphics off and you look at an end portal the game will crash. Turn on fancy graphics in the meantime.

EDIT: : In 1.0.0.0(build3) the issue is fixed or at least for me.

Steps To Reproduce
0. Turn off fancy graphics if enabled.
1. Do /locate stronghold
2. Find End Portal.
3. Place all but one Ender Eye.
4. Place final one and ta-da. "Unfortunately Minecraft PE has crashed."

For now, the fix is to enable Fancy Graphics which could be a somewhat disappointing bug for slower devices.

1. Open Settings > Video
2. Check "Fancy Graphics"
3. Do Step of 1 of Steps To Reproduce

Also as mentioned by Yanbar

If you stand inside of the portal while putting in the eyes of ender.
You will go the End just like normal ! Which I can imagine REALLY helps slower devices.