Blender 2.78a crashes when setting up IK system Okay, this has wasted fifteen minutes of my entire life.

I'm using Blender 2.78a with a Windows 32-bit OS. I was just following a character creation tutorial in Youtube
and I made it till the end of setting up the bones. I added a bone constraints (IK) to my character's leg bone, and tried to set the Bone field to the IK bone I just created a while ago. Just when I select the bone, Blender crashes.

I tried doing this over and over again and luckily, Blender didn't crash one time. But when I try to grab or rotate the IK bone that controls the leg bone, Blender crashes again. Now every time I try to open the blender file in Blender's splash screen, Blender crashes.

I managed to get this screenshot luckily one time : 



There's this other screenshot : 



Someone PLEASE help me! I can'r proceed with 3D modelling if I don't fix this error (or maybe if I buy Win64). Thanks :)

P.S.

Mind my spelling of Character in the splash screen - I saved it in a hurry :)
Blender shouldn't crash if you do something like this, so this is possibly a bug. Please try a recent daily build from the buildbot to see if it has already been fixed. If not, please report it at our bug tracker.