Plugins in development branch: Unable to handle unregistered datatype 'Score*'

Hi,

I've compiled musescore from a fresh git checkout, under linux (crunchbang, based on debian wheezy).

I'd like to get into making musescore plugins, but cannot get any to run. For example here is the output from the stock "walk" plugin, with the default score loaded (bilder einer ausstellung):

cannot read synthesizer settings
ChordList::read
parse: source = , handle = <>
parse: HChord = (145)
parse: xmlKind = , text = <>
parse: xmlSymbols = no, xmlParens = no
parse: xmlDegrees = <>
cannot load qml translations
Hello Walker
QMetaProperty::read: Unable to handle unregistered datatype 'Score*' for property 'Ms::QmlPlugin::curScore'
QMetaProperty::read: Unable to handle unregistered datatype 'Score*' for property 'Ms::QmlPlugin::curScore'
QMetaProperty::read: Unable to handle unregistered datatype 'Score*' for property 'Ms::QmlPlugin::curScore'
file:///usr/local/share/mscore-2.0/plugins/walk.qml:27: TypeError: Result of expression 'curScore' [undefined] is not an object.

Does anyone have tips for how to get this working? I wanted to use the development checkout version because I also need OSC control.

Best wishes,

alex