Index: class.tx_rtehtmlarea_base.php
===================================================================
--- class.tx_rtehtmlarea_base.php	(revision 7283)
+++ class.tx_rtehtmlarea_base.php	(working copy)
@@ -437,6 +437,7 @@
 		foreach ($this->pluginEnabledCumulativeArray[$this->TCEform->RTEcounter] as $pluginId) {
 			if (is_object($this->registeredPlugins[$pluginId])) {
 				$pathToSkin = $this->registeredPlugins[$pluginId]->getPathToSkin();
+				$key = $this->registeredPlugins[$pluginId]->getExtensionKey();
 				if ($pathToSkin) {
 					$this->addStyleSheet(
 						'rtehtmlarea-plugin-' . $pluginId . '-skin',