Crashes on load under Debian Wheezy

Following the Compile instructions for Ubuntu 12.04 and Git, I installed the trunk version on Debian Wheezy:
http://musescore.org/en/developers-handbook/compilation/compile-instruc…

Then when run it from the command line, I get an empty splash screen and the following output:

$ mscore -d
global share: </usr/local/share/mscore-2.0/\>
configured localeName <system>
real localeName <en_US>
load translator </usr/local/share/mscore-2.0/locale/mscore_en_US>
load translator <qt_en_US> from </usr/share/qt4/translations>
load translator <qt_en_US> failed
DPI 96.000000

Linux 3.2.0-4-686-pae #1 SMP Debian 3.2.41-2