Firefox Quantum?

About: Tumblr - Mass Posting Photos, Audio, Videos (bot, batch, bulk)
No longer works with 57.0.1 (Firefox Quantum?)

Worked before update. Update to Quantum? Script no longer loads on Tumblr. Not sure what else to look for.

columnNumber: 1
fileName: "resource://gre/modules/ExtensionContent.jsm"
lineNumber: 386
message: "jQuery is not defined"
stack: "userScript@user-script:http%3A//\nscopeWrapper@user-script:http%3A//\n@user-script:http%3A//\n"

edit: it *does* work in Tampermonkey though.