Rated 5 out of 5 stars

Thank you for keeping DOMi alive.

I can't seem to copy items from the DOM Node (right-click menu>copy)
Win7 x64 Firefox 59.0a1 (2017-12-08) (64-bit)
https://imgur.com/Tus1Yen

TypeError: Components.interfaces.nsIEntityConverter is undefined[Learn More] utils.js:89:11
IU_UnicodeToEntity chrome://inspector/content/utils.js:89:11
DOMA_ToString chrome://inspector/content/jsutil/system/clipboardFlavors.js:61:10
toString self-hosted:644:5
Utils_Copy_DoTransaction chrome://inspector/content/jsutil/commands/baseCommands.js:125:43
execCommand chrome://inspector/content/inspector.xml:277:13
oncommand chrome://inspector/content/viewers/domNode/domNode.xul:1:1

NS_ERROR_XPC_JAVASCRIPT_ERROR_WITH_DETAILS: Component returned failure code: 0x80570021 (NS_ERROR_XPC_JAVASCRIPT_ERROR_WITH_DETAILS) [nsITransactionManager.doTransaction] inspector.xml:277
execCommand chrome://inspector/content/inspector.xml:277:13
oncommand chrome://inspector/content/viewers/domNode/domNode.xul:1:1

This review is for a previous version of the add-on (2.0.17.1.1).