THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
This is due to a bug in Dojo. It is being discuss hereat WebWork's forum. The solution of resolving it could be found herefrom dojo's mailing list.
In short, line 79 in dojo/src/storage/browser.js
storeParts.push('codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,0,0"');
should be replaced with
storeParts.push('codebase="https://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,0,0"');