When opening the Registation bundle of the DiffusionApp it crashes at least on my Mac. I used the installer jonay sent today. Here is the stack trace:

libsystem_kernel.dylib 0x00007fff8edd4ce2 __pthread_kill + 10
1 libsystem_c.dylib 0x00007fff990ae7d2 pthread_kill + 95
2 libsystem_c.dylib 0x00007fff9909fa7a abort + 143
3 libPocoFoundation.1.3.5.dylib 0x000000010900d710 Poco::SignalHandler::handleSignal(int) + 62
4 libsystem_c.dylib 0x00007fff99100cfa _sigtramp + 26
5 liborg_mitk_gui_qt_registration.dylib 0x000000011d72f2ac QmitkRigidRegistrationSelectorView::DoLoadRigidRegistrationPreset(std::string) + 252
6 liborg_mitk_gui_qt_registration.dylib 0x000000011d72c765 QmitkRigidRegistrationSelectorView::QmitkRigidRegistrationSelectorView(QWidget*, QFlags<Qt::WindowType>) + 3205
7 liborg_mitk_gui_qt_registration.dylib 0x000000011d72977f Ui_QmitkRigidRegistrationViewControls::setupUi(QWidget*) + 15371
8 liborg_mitk_gui_qt_registration.dylib 0x000000011d71a354 QmitkRigidRegistrationView::CreateQtPartControl(QWidget*) + 24
9 liborg_mitk_gui_qt_common_legacy.dylib 0x000000011ca2abc1 QmitkFunctionality::CreatePartControl(void*) + 143
10 liborg_blueberry_ui.dylib 0x000000010eee996d berry::ViewReference::CreatePartHelper() + 1835
11 liborg_blueberry_ui.dylib 0x000000010eee8087 berry::ViewReference::CreatePart() + 69
12 liborg_blueberry_ui.dylib 0x000000010ef2a752 berry::WorkbenchPartReference::GetPart(bool) + 256
13 liborg_blueberry_ui.dylib 0x000000010ef2a648 virtual thunk to berry::WorkbenchPartReference::GetPart(bool) + 24