AVG internet security software blocks my 6500 at start up even though SDRv1.9.13 is included in its fire wall allowed applications along with DAX and CAT. If I turn off AVG, the 6500 can be seen in radio start up as normal. It continues to function normally if AVG is then turned on. But, Flex6500 will not boot up from scratch with AVG on. What am I missing???