BASCOM-AVR : AVR CAN BUS : REPLY

Hi CAN AVR now running smooth - but only on 2.0.7.5 . 's programmer . for some reason 2.0.7.6 does not detect the chip - reply is does not detect chip with id 00000 or FFFFF but 2.0.7.5 works on same pc a few seconds later ? Is there a file with programmer settings that might be missing ? Same settings selected ( STK200 on LPT ) in both compilers. Thanks for all the help.