doesn't work on Firefox nightly Rated 3 out of 5 stars

1446113418150 addons.xpi WARN Exception running bootstrap method startup on urlAddonBar@zbinlin: SyntaxError: missing variable name (resource://gre/modules/addons/XPIProvider.jsm -> jar:file:///C:/Users/XXX/AppData/Roaming/Mozilla/Firefox/Profiles/50dzyjg7.Default%20User/extensions/urlAddonBar@zbinlin.xpi!/bootstrap.js -> resource://urladdonbar/content/overlay.js:23:16) JS Stack trace: UrlAddonBar.loadScript@resource://gre/modules/addons/XPIProvider.jsm -> jar:file:///C:/Users/XXX/AppData/Roaming/Mozilla/Firefox/Profiles/50dzyjg7.Default%20User/extensions/urlAddonBar@bootstrap.js:49:1 < UrlAddonBar.init/<@resource://gre/modules/addons/XPIProvider.jsm -> jar:file:///C:/Users/XXX/AppData/Roaming/Mozilla/Firefox/Profiles/50dzyjg7.Default%20User/extensions/urlAddonBar@bootstrap.js:77:13 < UrlAddonBar.init@resource://gre/modules/addons/XPIProvider.jsm -> jar:file:///C:/Users/XXX/AppData/Roaming/Mozilla/Firefox/Profiles/50dzyjg7.Default%20User/extensions/urlAddonBar@bootstrap.js:76:1 < startup@resource://gre/modules/addons/XPIProvider.jsm -> jar:file:///C:/Users/XXX/AppData/Roaming/Mozilla/Firefox/Profiles/50dzyjg7.Default%20User/extensions/urlAddonBar@bootstrap.js:152:5 < XPI_callBootstrapMethod@XPIProvider.jsm:4432:9 < XPI_updateAddonDisabledState@XPIProvider.jsm:4565:1 < AddonWrapper_userDisabledSetter@XPIProvider.jsm:6940:9 < cmd_enableItem_doCommand@extensions.js:1163:9 < gVC_doCommand@extensions.js:1460:5 < initialize/<@extensions.js:104:5 < EventListener.handleEvent*initialize@extensions.js:103:3 < EventListener.handleEvent*@extensions.js:78:1

This review is for a previous version of the add-on (0.3.0).