- hsf->SampleFormatSelectChanged.connect (*this, boost::bind (&ExportFormatManager::change_sample_format_selection, this, _1, _2));
- hsf->DitherTypeSelectChanged.connect (*this, boost::bind (&ExportFormatManager::change_dither_type_selection, this, _1, _2));
+ hsf->SampleFormatSelectChanged.connect_same_thread (*this, boost::bind (&ExportFormatManager::change_sample_format_selection, this, _1, _2));
+ hsf->DitherTypeSelectChanged.connect_same_thread (*this, boost::bind (&ExportFormatManager::change_dither_type_selection, this, _1, _2));