Index: typo3/sysext/rtehtmlarea/htmlarea/plugins/BlockElements/block-elements.js
===================================================================
--- typo3/sysext/rtehtmlarea/htmlarea/plugins/BlockElements/block-elements.js	(révision 7362)
+++ typo3/sysext/rtehtmlarea/htmlarea/plugins/BlockElements/block-elements.js	(copie de travail)
@@ -179,7 +179,7 @@
 					iconCls		: 'htmlarea-action-' + button[3],
 					contextMenuTitle: this.localize(buttonId + '-contextMenuTitle'),
 					action		: 'onButtonPress',
-					hotKey		: (this.buttonsConfiguration[button[2]] ? this.buttonsConfiguration[button[2]].hotKey : (button[1] ? button[1] : null))
+					hotKey		: ((this.buttonsConfiguration[button[2]] && this.buttonsConfiguration[button[2]].hotKey) ? this.buttonsConfiguration[button[2]].hotKey : (button[1] ? button[1] : null))
 				};
 				this.registerButton(buttonConfiguration);
 			}
Index: typo3/sysext/rtehtmlarea/htmlarea/plugins/DefinitionList/definition-list.js
===================================================================
--- typo3/sysext/rtehtmlarea/htmlarea/plugins/DefinitionList/definition-list.js	(révision 7362)
+++ typo3/sysext/rtehtmlarea/htmlarea/plugins/DefinitionList/definition-list.js	(copie de travail)
@@ -78,7 +78,7 @@
 				iconCls		: 'htmlarea-action-' + button[5],
 				action		: 'onButtonPress',
 				context		: button[1],
-				hotKey		: (this.buttonsConfiguration[button[3]] ? this.buttonsConfiguration[button[3]].hotKey : (button[2] ? button[2] : null)),
+				hotKey		: ((this.buttonsConfiguration[button[3]] && this.buttonsConfiguration[button[3]].hotKey) ? this.buttonsConfiguration[button[3]].hotKey : (button[2] ? button[2] : null)),
 				noAutoUpdate	: button[4]
 			};
 			this.registerButton(buttonConfiguration);
Index: typo3/sysext/rtehtmlarea/htmlarea/plugins/UndoRedo/undo-redo.js
===================================================================
--- typo3/sysext/rtehtmlarea/htmlarea/plugins/UndoRedo/undo-redo.js	(révision 7362)
+++ typo3/sysext/rtehtmlarea/htmlarea/plugins/UndoRedo/undo-redo.js	(copie de travail)
@@ -72,7 +72,7 @@
 				tooltip		: this.localize(buttonId.toLowerCase()),
 				iconCls		: 'htmlarea-action-' + button[3],
 				action		: 'onButtonPress',
-				hotKey		: (this.editorConfiguration.buttons[buttonId.toLowerCase()]?this.editorConfiguration.buttons[buttonId.toLowerCase()].hotKey:button[2]),
+				hotKey		: ((this.editorConfiguration.buttons[buttonId.toLowerCase()] && this.editorConfiguration.buttons[buttonId.toLowerCase()].hotKey) ? this.editorConfiguration.buttons[buttonId.toLowerCase()].hotKey : button[2]),
 				noAutoUpdate	: true
 			};
 			this.registerButton(buttonConfiguration);