From e10e9ca77f9e9b34b341076bcd88aea2b08ee462 Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Tue, 1 Sep 2015 13:28:33 +0200
Subject: [PATCH] handle GUIs of missing or disabled plugins

---
 gtk2_ardour/window_manager.cc | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/gtk2_ardour/window_manager.cc b/gtk2_ardour/window_manager.cc
index 01baf3e1fd..f8f755747b 100644
--- a/gtk2_ardour/window_manager.cc
+++ b/gtk2_ardour/window_manager.cc
@@ -97,6 +97,12 @@ Manager::show_visible() const
 {
 	for (Windows::const_iterator i = _windows.begin(); i != _windows.end(); ++i) {
 		if ((*i)->visible()) {
+			if (! (*i)->get (true)) {
+				/* the window may be a plugin GUI for a plugin which
+				 * is disabled or longer present.
+				 */
+				continue;
+			}
 			(*i)->show_all ();
 			(*i)->present ();
 		}