--- ECHO_content/ECHO_collection.py	2005/01/31 11:15:50	1.207
+++ ECHO_content/ECHO_collection.py	2005/02/02 18:13:59	1.208
@@ -2373,6 +2373,8 @@ class ECHO_root(Folder,Persistent,Implic
 
     def checkResource(self,id):
 	    """checks if a resource is in the tree, gives back none or list of resources"""
+	    if not id:
+		id=""
 	    splitted=id.split("/")
 	    id=splitted[len(splitted)-1]
 	    if hasattr(self,"_v_checkResource") and self._v_checkResource.has_key(id): #existiert ein cache und id ist bereits drin?