The following bug caused an infinite loop when I tried to use 'call' to call 'getClass' on the result of calling Vector.elements(). It's fixed in 5.0a6. In Jess 4.4, in file reflect/ReflectFunctions.java, in function Call.call, there is a line: for (int ii =0; ii< interfaces.length; i++) The loop is incrementing 'i' instead of 'ii'. --------------------------------------------------------------------- To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED] ---------------------------------------------------------------------