I found the DebugDialog code but was confused when setting dialogs.debug to 1 in preferences.xml didn't show the dialog. So I changed the code in inkscape.cpp, line 573:

if (use_gui == TRUE && prefs_get_int_attribute("dialogs.debug", "redirect", DEFAULT_LOG_REDIRECT)) {

Inkscape::UI::Dialogs::DebugDialog::getInstance()->captureLogMessages(); Inkscape::UI::Dialogs::DebugDialog::showInstance(); }

Is this the right way to do this?

Adam