Paul van der Linden wrote: > I'm using the 18F4550. > Programming, reading, erasing, enz is working. None of these require a clock. Also, did you reserve the resources needed by the ICD2 in the code? ***************************************************************** Embed Inc, embedded system specialists in Littleton Massachusetts (978) 742-9014, http://www.embedinc.com -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist