Index: typo3/sysext/rtehtmlarea/class.tx_rtehtmlarea_base.php
===================================================================
--- typo3/sysext/rtehtmlarea/class.tx_rtehtmlarea_base.php	(révision 9003)
+++ typo3/sysext/rtehtmlarea/class.tx_rtehtmlarea_base.php	(copie de travail)
@@ -1372,7 +1372,7 @@
 	 */
 
 	function is_FE() {
-		return is_object($GLOBALS['TSFE']) && !$this->isFrontendEditActive();
+		return is_object($GLOBALS['TSFE']) && !$this->isFrontendEditActive() && TYPO3_MODE=='FE';
 	}
 
 	/**