Uncaught Error: Assertion failed: creating new expression, but no expression hint was found
Error: Assertion failed: creating new expression, but no expression hint was found
at window.assertions.assertFunction (http://phettest.colorado.edu/assert/js/assert.js:23:13)
at Array.coinTermUserControlledListener (http://phettest.colorado.edu/expression-exchange/js/common/model/ExpressionManipulationModel.js?bust=1465316271158:176:29)
at Emitter.emit2 (http://phettest.colorado.edu/axon/js/Emitter.js?bust=1465316271158:139:49)
at Property._notifyObservers (http://phettest.colorado.edu/axon/js/Property.js?bust=1465316271158:129:29)
at Property._setAndNotifyObservers (http://phettest.colorado.edu/axon/js/Property.js?bust=1465316271158:117:14)
at Property.set (http://phettest.colorado.edu/axon/js/Property.js?bust=1465316271158:85:16)
at CoinTerm.set [as userControlled] (http://phettest.colorado.edu/axon/js/PropertySet.js?bust=1465316271158:141:43)
at end (http://phettest.colorado.edu/expression-exchange/js/common/view/CoinTermCreatorNode.js?bust=1465316271158:126:40)
at SimpleDragHandler.endDrag (http://phettest.colorado.edu/scenery/js/input/SimpleDragHandler.js?bust=1465316271158:165:26)
at Object.up (http://phettest.colorado.edu/scenery/js/input/SimpleDragHandler.js?bust=1465316271158:74:19)
Uncaught Error: Assertion failed: hide button timer should be running if pop up buttons are visible
window.assertions.assertFunction @ assert.js:23
enter @ ExpressionOverlayNode.js?bust=1465316385954:115
dispatchToTargets @ Input.js?bust=1465316385954:846
dispatchEvent @ Input.js?bust=1465316385954:788
enterEvents @ Input.js?bust=1465316385954:732
branchChangeEvents @ Input.js?bust=1465316385954:723
moveEvent @ Input.js?bust=1465316385954:678
mouseMove @ Input.js?bust=1465316385954:334
run @ BatchedDOMEvent.js?bust=1465316385954:63
fireBatchedEvents @ Input.js?bust=1465316385954:158
batchEvent @ Input.js?bust=1465316385954:128
onmousemove @ Input.js?bust=1465316385954:111
Uncaught Error: Assertion failed: should not be over button without hide timer running
window.assertions.assertFunction @ assert.js:23
(anonymous function) @ CoinTermNode.js?bust=1465316385954:286
emit2 @ Emitter.js?bust=1465316385954:139
_notifyObservers @ Property.js?bust=1465316385954:129
_setAndNotifyObservers @ Property.js?bust=1465316385954:117
set @ Property.js?bust=1465316385954:85
set @ PropertySet.js?bust=1465316385954:141
enter @ ButtonListener.js?bust=1465316385954:91
dispatchToTargets @ Input.js?bust=1465316385954:846
dispatchEvent @ Input.js?bust=1465316385954:788
enterEvents @ Input.js?bust=1465316385954:732
branchChangeEvents @ Input.js?bust=1465316385954:723
moveEvent @ Input.js?bust=1465316385954:678
mouseMove @ Input.js?bust=1465316385954:334
run @ BatchedDOMEvent.js?bust=1465316385954:63
fireBatchedEvents @ Input.js?bust=1465316385954:158
batchEvent @ Input.js?bust=1465316385954:128
onmousemove @ Input.js?bust=1465316385954:111
CoinTermNode.js?bust=1465316385954:334
TypeError: Cannot read property 'clear' of undefined
at e.removeExpressionHint (http://phettest.colorado.edu/expression-exchange/build/expression-exchange_en.html?ea&postMessageOnLoad&postMessageOnError&fuzzMouse=100:718:12247)
at Array.e (http://phettest.colorado.edu/expression-exchange/build/expression-exchange_en.html?ea&postMessageOnLoad&postMessageOnError&fuzzMouse=100:718:6816)
at emit2 (http://phettest.colorado.edu/expression-exchange/build/expression-exchange_en.html?ea&postMessageOnLoad&postMessageOnError&fuzzMouse=100:716:25908)
at e._notifyObservers (http://phettest.colorado.edu/expression-exchange/build/expression-exchange_en.html?ea&postMessageOnLoad&postMessageOnError&fuzzMouse=100:717:12237)
at e._setAndNotifyObservers (http://phettest.colorado.edu/expression-exchange/build/expression-exchange_en.html?ea&postMessageOnLoad&postMessageOnError&fuzzMouse=100:717:12095)
at e.set (http://phettest.colorado.edu/expression-exchange/build/expression-exchange_en.html?ea&postMessageOnLoad&postMessageOnError&fuzzMouse=100:717:11836)
at e.set [as userControlled] (http://phettest.colorado.edu/expression-exchange/build/expression-exchange_en.html?ea&postMessageOnLoad&postMessageOnError&fuzzMouse=100:717:17219)
at end (http://phettest.colorado.edu/expression-exchange/build/expression-exchange_en.html?ea&postMessageOnLoad&postMessageOnError&fuzzMouse=100:734:30101)
at endDrag (http://phettest.colorado.edu/expression-exchange/build/expression-exchange_en.html?ea&postMessageOnLoad&postMessageOnError&fuzzMouse=100:727:2174)
at Object.up (http://phettest.colorado.edu/expression-exchange/build/expression-exchange_en.html?ea&postMessageOnLoad&postMessageOnError&fuzzMouse=100:727:786)