Index: /FCKeditor.Java/branches/2.5-test/java-core/src/main/java/net/fckeditor/connector/Dispatcher.java
===================================================================
--- /FCKeditor.Java/branches/2.5-test/java-core/src/main/java/net/fckeditor/connector/Dispatcher.java	(revision 2421)
+++ /FCKeditor.Java/branches/2.5-test/java-core/src/main/java/net/fckeditor/connector/Dispatcher.java	(revision 2422)
@@ -116,6 +116,10 @@
 			else if (command.equals(CommandHandler.CREATE_FOLDER)) {
 				String newFolderStr = UtilsFile.sanitizeFolderName(request.getParameter("NewFolderName"));
-				logger.debug("Parameter NewFolderName: {}", newFolderStr);
-				getResponse = connector.createFolder(type, currentFolderStr, newFolderStr);
+				if (Utils.isEmpty(newFolderStr))
+					getResponse = GetResponse.getErrorInvalidFolderName();
+				else {
+					logger.debug("Parameter NewFolderName: {}", newFolderStr);
+					getResponse = connector.createFolder(type, currentFolderStr, newFolderStr);
+				}
 			} else 
 				getResponse = GetResponse.getErrorUnknown();