From 2f027fce2d84d8d0c55252df53ca667d923961fb Mon Sep 17 00:00:00 2001
From: Ben Alpert <spicyjalapeno@gmail.com>
Date: Mon, 13 Jan 2014 13:26:24 -0800
Subject: [PATCH] Improve "Can only mount when umounted" message

---
 src/core/ReactComponent.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/core/ReactComponent.js b/src/core/ReactComponent.js
index 7eb10b9df0..45b9e688a9 100644
--- a/src/core/ReactComponent.js
+++ b/src/core/ReactComponent.js
@@ -321,7 +321,9 @@ var ReactComponent = {
     mountComponent: function(rootID, transaction, mountDepth) {
       invariant(
         !this.isMounted(),
-        'mountComponent(%s, ...): Can only mount an unmounted component.',
+        'mountComponent(%s, ...): Can only mount an unmounted component. ' +
+        'Make sure to avoid storing components between renders or reusing a ' +
+        'single component instance in multiple places.',
         rootID
       );
       var props = this.props;