diff --git a/gui/dialogs/clemenceau.xml b/gui/dialogs/clemenceau.xml
index ad8a9dc1c..260abc51c 100644
--- a/gui/dialogs/clemenceau.xml
+++ b/gui/dialogs/clemenceau.xml
@@ -62,7 +62,7 @@
 					var v = getprop("/controls/clemenceau/turn-to-launch-hdg");
 						foreach (var c; props.globals.getNode("/ai/models").getChildren("carrier")){
 						
-						if (c.getNode("name").getValue() == "Clemenceau")
+						if (c.getNode("name").getValue() != nil and c.getNode("name").getValue() == "Clemenceau")
 							{
 							c.getNode("controls/turn-to-launch-hdg").setBoolValue(v);
 							c.getNode("controls/turn-to-recovery-hdg").setBoolValue(0);
@@ -92,7 +92,7 @@
 					var v = getprop("/controls/clemenceau/turn-to-recovery-hdg");
 						foreach (var c; props.globals.getNode("/ai/models").getChildren("carrier")){
 
-						if (c.getNode("name").getValue() == "Clemenceau")
+						if (c.getNode("name").getValue() != nil and c.getNode("name").getValue() == "Clemenceau")
 							{
 							c.getNode("controls/turn-to-recovery-hdg").setBoolValue(v);
 							c.getNode("controls/turn-to-launch-hdg").setBoolValue(0);
@@ -122,7 +122,7 @@
 					var v = getprop("/controls/clemenceau/turn-to-base-course");
 						foreach (var c; props.globals.getNode("/ai/models").getChildren("carrier")){
 
-						if (c.getNode("name").getValue() == "Clemenceau")
+						if (c.getNode("name").getValue() != nil and c.getNode("name").getValue() == "Clemenceau")
 							{
 							c.getNode("controls/turn-to-base-course").setBoolValue(v);
 							c.getNode("controls/turn-to-recovery-hdg").setBoolValue(0);
diff --git a/gui/dialogs/eisenhower.xml b/gui/dialogs/eisenhower.xml
index 9710038bc..005dcc59c 100644
--- a/gui/dialogs/eisenhower.xml
+++ b/gui/dialogs/eisenhower.xml
@@ -62,7 +62,7 @@
 					var v = getprop("/controls/eisenhower/turn-to-launch-hdg");
 						foreach (var c; props.globals.getNode("/ai/models").getChildren("carrier")){
 						
-						if (c.getNode("name").getValue() == "Eisenhower")
+						if (c.getNode("name").getValue() != nil and c.getNode("name").getValue() == "Eisenhower")
 							{
 							c.getNode("controls/turn-to-launch-hdg").setBoolValue(v);
 							c.getNode("controls/turn-to-recovery-hdg").setBoolValue(0);
@@ -92,7 +92,7 @@
 					var v = getprop("/controls/eisenhower/turn-to-recovery-hdg");
 						foreach (var c; props.globals.getNode("/ai/models").getChildren("carrier")){
 
-						if (c.getNode("name").getValue() == "Eisenhower")
+						if (c.getNode("name").getValue() != nil and c.getNode("name").getValue() == "Eisenhower")
 							{
 							c.getNode("controls/turn-to-recovery-hdg").setBoolValue(v);
 							c.getNode("controls/turn-to-launch-hdg").setBoolValue(0);
@@ -122,7 +122,7 @@
 					var v = getprop("/controls/eisenhower/turn-to-base-course");
 						foreach (var c; props.globals.getNode("/ai/models").getChildren("carrier")){
 
-						if (c.getNode("name").getValue() == "Eisenhower")
+						if (c.getNode("name").getValue() != nil and c.getNode("name").getValue() == "Eisenhower")
 							{
 							c.getNode("controls/turn-to-base-course").setBoolValue(v);
 							c.getNode("controls/turn-to-recovery-hdg").setBoolValue(0);
diff --git a/gui/dialogs/nimitz.xml b/gui/dialogs/nimitz.xml
index 648e61512..c48d6ce33 100644
--- a/gui/dialogs/nimitz.xml
+++ b/gui/dialogs/nimitz.xml
@@ -62,7 +62,7 @@
 					var v = getprop("/controls/nimitz/turn-to-launch-hdg");
 						foreach (var c; props.globals.getNode("/ai/models").getChildren("carrier")){
 						
-						if (c.getNode("name").getValue() == "Nimitz")
+						if (c.getNode("name").getValue() != nil and c.getNode("name").getValue() == "Nimitz")
 							{
 							c.getNode("controls/turn-to-launch-hdg").setBoolValue(v);
 							c.getNode("controls/turn-to-recovery-hdg").setBoolValue(0);
@@ -92,7 +92,7 @@
 					var v = getprop("/controls/nimitz/turn-to-recovery-hdg");
 						foreach (var c; props.globals.getNode("/ai/models").getChildren("carrier")){
 
-						if (c.getNode("name").getValue() == "Nimitz")
+						if (c.getNode("name").getValue() != nil and c.getNode("name").getValue() == "Nimitz")
 							{
 							c.getNode("controls/turn-to-recovery-hdg").setBoolValue(v);
 							c.getNode("controls/turn-to-launch-hdg").setBoolValue(0);
@@ -122,7 +122,7 @@
 					var v = getprop("/controls/nimitz/turn-to-base-course");
 						foreach (var c; props.globals.getNode("/ai/models").getChildren("carrier")){
 
-						if (c.getNode("name").getValue() == "Nimitz")
+						if (c.getNode("name").getValue() != nil and c.getNode("name").getValue() == "Nimitz")
 							{
 							c.getNode("controls/turn-to-base-course").setBoolValue(v);
 							c.getNode("controls/turn-to-recovery-hdg").setBoolValue(0);
diff --git a/gui/dialogs/san_antonio.xml b/gui/dialogs/san_antonio.xml
index 2ed027cd7..d21035609 100644
--- a/gui/dialogs/san_antonio.xml
+++ b/gui/dialogs/san_antonio.xml
@@ -62,7 +62,7 @@
 					var v = getprop("/controls/sanantonio/turn-to-launch-hdg");
 						foreach (var c; props.globals.getNode("/ai/models").getChildren("carrier")){
 						
-						if (c.getNode("name").getValue() == "San Antonio")
+						if (c.getNode("name").getValue() != nil and c.getNode("name").getValue() == "San Antonio")
 							{
 							c.getNode("controls/turn-to-launch-hdg").setBoolValue(v);
 							c.getNode("controls/turn-to-recovery-hdg").setBoolValue(0);
@@ -92,7 +92,7 @@
 					var v = getprop("/controls/sanantonio/turn-to-recovery-hdg");
 						foreach (var c; props.globals.getNode("/ai/models").getChildren("carrier")){
 
-						if (c.getNode("name").getValue() == "San Antonio")
+						if (c.getNode("name").getValue() != nil and c.getNode("name").getValue() == "San Antonio")
 							{
 							c.getNode("controls/turn-to-recovery-hdg").setBoolValue(v);
 							c.getNode("controls/turn-to-launch-hdg").setBoolValue(0);
@@ -122,7 +122,7 @@
 					var v = getprop("/controls/sanantonio/turn-to-base-course");
 						foreach (var c; props.globals.getNode("/ai/models").getChildren("carrier")){
 
-						if (c.getNode("name").getValue() == "San Antonio")
+						if (c.getNode("name").getValue() != nil and c.getNode("name").getValue() == "San Antonio")
 							{
 							c.getNode("controls/turn-to-base-course").setBoolValue(v);
 							c.getNode("controls/turn-to-recovery-hdg").setBoolValue(0);
diff --git a/gui/dialogs/truman.xml b/gui/dialogs/truman.xml
index 15cc5243e..d9d172c67 100644
--- a/gui/dialogs/truman.xml
+++ b/gui/dialogs/truman.xml
@@ -62,7 +62,7 @@
 					var v = getprop("/controls/truman/turn-to-launch-hdg");
 						foreach (var c; props.globals.getNode("/ai/models").getChildren("carrier")){
 
-						if (c.getNode("name").getValue() == "Truman")
+						if (c.getNode("name").getValue() != nil and c.getNode("name").getValue() == "Truman")
 							{
 							c.getNode("controls/turn-to-launch-hdg").setBoolValue(v);
 							c.getNode("controls/turn-to-recovery-hdg").setBoolValue(0);
@@ -92,7 +92,7 @@
 					var v = getprop("/controls/truman/turn-to-recovery-hdg");
 						foreach (var c; props.globals.getNode("/ai/models").getChildren("carrier")){
 
-						if (c.getNode("name").getValue() == "Truman")
+						if (c.getNode("name").getValue() != nil and c.getNode("name").getValue() == "Truman")
 							{
 							c.getNode("controls/turn-to-recovery-hdg").setBoolValue(v);
 							c.getNode("controls/turn-to-launch-hdg").setBoolValue(0);
@@ -121,7 +121,7 @@
 					var v = getprop("/controls/truman/turn-to-base-course");
 						foreach (var c; props.globals.getNode("/ai/models").getChildren("carrier")){
 
-						if (c.getNode("name").getValue() == "Truman")
+						if (c.getNode("name").getValue() != nil and c.getNode("name").getValue() == "Truman")
 							{
 							c.getNode("controls/turn-to-base-course").setBoolValue(v);
 							c.getNode("controls/turn-to-recovery-hdg").setBoolValue(0);
diff --git a/gui/dialogs/vinson.xml b/gui/dialogs/vinson.xml
index 3288cfc9c..99062292d 100644
--- a/gui/dialogs/vinson.xml
+++ b/gui/dialogs/vinson.xml
@@ -62,7 +62,7 @@
 					var v = getprop("/controls/vinson/turn-to-launch-hdg");
 						foreach (var c; props.globals.getNode("/ai/models").getChildren("carrier")){
 						
-						if (c.getNode("name").getValue() == "Vinson")
+						if (c.getNode("name").getValue() != nil and c.getNode("name").getValue() == "Vinson")
 							{
 							c.getNode("controls/turn-to-launch-hdg").setBoolValue(v);
 							c.getNode("controls/turn-to-recovery-hdg").setBoolValue(0);
@@ -92,7 +92,7 @@
 					var v = getprop("/controls/vinson/turn-to-recovery-hdg");
 						foreach (var c; props.globals.getNode("/ai/models").getChildren("carrier")){
 
-						if (c.getNode("name").getValue() == "Vinson")
+						if (c.getNode("name").getValue() != nil and c.getNode("name").getValue() == "Vinson")
 							{
 							c.getNode("controls/turn-to-recovery-hdg").setBoolValue(v);
 							c.getNode("controls/turn-to-launch-hdg").setBoolValue(0);
@@ -122,7 +122,7 @@
 					var v = getprop("/controls/vinson/turn-to-base-course");
 						foreach (var c; props.globals.getNode("/ai/models").getChildren("carrier")){
 
-						if (c.getNode("name").getValue() == "Vinson")
+						if (c.getNode("name").getValue() != nil and c.getNode("name").getValue() == "Vinson")
 							{
 							c.getNode("controls/turn-to-base-course").setBoolValue(v);
 							c.getNode("controls/turn-to-recovery-hdg").setBoolValue(0);