diff --git a/dsf-gdb/org.eclipse.cdt.dsf.gdb/src/org/eclipse/cdt/dsf/gdb/launching/FinalLaunchSequence.java b/dsf-gdb/org.eclipse.cdt.dsf.gdb/src/org/eclipse/cdt/dsf/gdb/launching/FinalLaunchSequence.java
index 42b82306dd2..a36dd5ddc12 100644
--- a/dsf-gdb/org.eclipse.cdt.dsf.gdb/src/org/eclipse/cdt/dsf/gdb/launching/FinalLaunchSequence.java
+++ b/dsf-gdb/org.eclipse.cdt.dsf.gdb/src/org/eclipse/cdt/dsf/gdb/launching/FinalLaunchSequence.java
@@ -25,6 +25,7 @@ import org.eclipse.cdt.debug.core.ICDTLaunchConfigurationConstants;
 import org.eclipse.cdt.debug.internal.core.sourcelookup.CSourceLookupDirector;
 import org.eclipse.cdt.dsf.concurrent.DataRequestMonitor;
 import org.eclipse.cdt.dsf.concurrent.ImmediateDataRequestMonitor;
+import org.eclipse.cdt.dsf.concurrent.ImmediateRequestMonitor;
 import org.eclipse.cdt.dsf.concurrent.ReflectionSequence;
 import org.eclipse.cdt.dsf.concurrent.RequestMonitor;
 import org.eclipse.cdt.dsf.concurrent.RequestMonitorWithProgress;
@@ -209,11 +210,25 @@ public class FinalLaunchSequence extends ReflectionSequence {
 					new RequestMonitor(getExecutor(), requestMonitor) {
 						@Override
 						protected void handleCompleted() {
-							fCommandControl.setPrintPythonErrors(false, requestMonitor);
+							fCommandControl.setPrintPythonErrors(false,  new ImmediateRequestMonitor() {
+								@Override
+								protected void handleCompleted() {
+									// Ignore this error
+									// Bug 402988
+									requestMonitor.done();
+								}
+							});
 						}
 					});
 		} else {
-			fCommandControl.setPrintPythonErrors(false, requestMonitor);
+			fCommandControl.setPrintPythonErrors(false, new ImmediateRequestMonitor() {
+				@Override
+				protected void handleCompleted() {
+					// Ignore this error
+					// Bug 402988
+					requestMonitor.done();
+				}
+			});
 		}
 	}