Cause seems to be the use of a sharp variable: Error: invalid sharp variable use #1# Source File: gamedata.js Line: 245 Sharp variables are discouraged by Mozilla (https://developer.mozilla.org/en/Sharp_variables_in_JavaScript) and only seem to work with Spidermonkey; Tracemonkey doesn't seem to support them anymore. <p>Cause seems to be the use of a sharp variable:</p> <p>Error: invalid sharp variable use #1# <br />Source File: gamedata.js <br />Line: 245</p> <p>Sharp variables are discouraged by Mozilla (<a href="https://developer.mozilla.org/en/Sharp_variables_in_JavaScript">https://developer.mozilla.org/en/Sharp_variable...</a>) and only seem to work with Spidermonkey; Tracemonkey doesn't seem to support them anymore.</p> 2009-03-17T13:57:07Z 29050 Script 103270 23335 2009-03-17T13:57:07Z 57745