Index: trunk/admin/editor/cmseditor/editor/filemanager/browser/default/connectors/php/commands.php
===================================================================
diff -u -N -r4995 -r5049
--- trunk/admin/editor/cmseditor/editor/filemanager/browser/default/connectors/php/commands.php	(.../commands.php)	(revision 4995)
+++ trunk/admin/editor/cmseditor/editor/filemanager/browser/default/connectors/php/commands.php	(.../commands.php)	(revision 5049)
@@ -427,7 +427,7 @@
 		{
 			$sErrorNumber = '204' ;
 		} else {
-			if ( ( count($arAllowed) == 0 || in_array( $sExtension, $arAllowed ) ) && ( count($arDenied) == 0 || !in_array( $sExtension, $arDenied ) ) )
+			if ( ( count($arAllowed) == 0 || in_array( strtolower($sExtension), $arAllowed ) ) && ( count($arDenied) == 0 || !in_array( strtoupper($sExtension), $arDenied ) ) )
 			{
 				if (rename($sServerDir.$aFilenames[0],$sServerDir.$aFilenames[1])) {
 					if (isset($Config['K4Mode'])) {
@@ -457,7 +457,7 @@
 		// Get the uploaded file name.
 		$sFileName = $oFile['name'] ;
 		$sOriginalFileName = $sFileName ;
-		$sExtension = substr( $sFileName, ( strrpos($sFileName, '.') + 1 ) ) ;
+		$sExtension = strtolower(substr( $sFileName, ( strrpos($sFileName, '.') + 1 ) ) );
 		global $Config ;
 		$arAllowed	= $Config['AllowedExtensions'][$resourceType] ;
 		$arDenied	= $Config['DeniedExtensions'][$resourceType] ;