[Twee][Sugarcube] Error: cannot find the StoryTitle special passage

Hey all. I am trying to build a game using Twee (Version from Sep 1, 2014) SugarCube 2 (v2.6.1) on OSX 10.11.4 (15E65). I have a text file 'Demo.txt' with the following content:

:: Start
Some text goes here

:: StoryTitle
Title of the Game

Twee builds without error, but the built html page gives me this error:

Apologies! A fatal error has occurred. Aborting.

Error: cannot find the StoryTitle special passage.

Stack Trace:
e@file:///Volumes/San Disk/Dev/Twee Test/Demo.html:150:3479
@file:///Volumes/San Disk/Dev/Twee Test/Demo.html:150:22998
n.Callbacks/i@file:///Volumes/San Disk/Dev/Twee Test/Demo.html:64:27060
n.Callbacks/j.fireWith@file:///Volumes/San Disk/Dev/Twee Test/Demo.html:64:27828
.ready@file:///Volumes/San Disk/Dev/Twee Test/Demo.html:64:29619
J@file:///Volumes/San Disk/Dev/Twee Test/Demo.html:64:29804

Building in SugarCube – v1.0.35 gives me this error:

Apologies! A fatal problem has occurred. Aborting.

Error: cannot find the StoryTitle special passage.

Using sugarcane builds and runs fine. I've also tested Twee2 and it works if I incude a ::StoryIFID[twee2] passage. Has anyone experienced this? Is there something missing in the tweecode file?