Khan/khan-exercises — Issue #9928: Number line - failure to advance to subsequent question
Author: KhanBugz
Created: 2011-12-31 03:46:00+00:00
State: open
Labels: leopard, other, safari

Reporter: curlychips@earthlink.net

after correctly answering a question, clicking on the "next problem" button results in "please wait" (and score is not updated). The only way to advance is to manually refresh the browser window. While the next question then appears (and the score has been updated), the option to switch to a different lesson/topic (as when doing refresher problems) is not offered in the refreshed screen. I am using Safari 5.0.6 and the problem is a recent manifestation -- it worked fine last week!

[number_line.html?seed=134&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/number_line.html?seed=134&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/number_line.html?seed=134&problem=0&debug&activity=%5B%5D)

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Mozilla/5.0 (Macintosh; Intel Mac OS X 10_5_8) AppleWebKit/534.50.2 (KHTML, like Gecko) Version/5.0.6 Safari/533.22.3

MathJax is loaded, ready, queue length: 0

You should enable font download in your browser to improve the appearance of math expressions.