Khan/khan-exercises — Issue #6022: Subtraction 4 - nothing is showing up but a line
Author: KhanBugz
Created: 2011-11-11 01:28:05+00:00
State: open
Labels: ie8, win7

when i click to do this lesson nothing shows up but 2 lines that r red and flashing

[subtraction_4.html?seed=0&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/subtraction_4.html?seed=0&problem=0&debug)

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