Oh dear , this is not my weekend.
I have a MacBook Pro running 10.6.6 . I have a Garmin extrex Vista HCx. For the last three years these two have been happily compatible but alas after being away for 9 months overseas ( and forgetting my GPS) returned home for a bit of R & R and some caching. Alas the GPS is no longer recognized by my computer. I have downloaded the latest Garmin communicator plug in 126.96.36.199. I have also tried the GPS on my other G4 unit and that also does not recognize the GPS where as it used to. So it would seem that perhaps something at the GPS end is amiss. I have tried different cables, variations in switching the GPS On and off /Mac on and off , and have reached the end of my limited technical expertise.
Fellow GPS/Mac users far wiser and technical than me can you help ?