I am pretty familiar with CAN message objects 1-14, but for some reason, my current register settings do not allow message 15 to interrupt on every message. Here are my settings: C1GMS = 0xE0FF; C1UGML = 0xFFFF; C1LGML = 0xF8FF; CAN_OBJ[15].MCR = 0x5599; CAN_OBJ[15].MCFG = 0x0080; C1UMLM = 0x0000; C1LMLM = 0x0000; CAN_OBJ[15].UAR = 0x0000; CAN_OBJ[15].LAR = 0x0000; I can get the rest of my routines to interrupt on messages 1-14 with no problem with the existing code. Any help would be much appreciated. Thanks...