Thanks for that .. interestingly, the "normal" SE9.541 will not run ... just hangs at the start screen and needs paperclipping to reset, but Simba's version runs well, especially after a bit of tweaking to remove the Spanish bits !!

With the "new" @tomtom.com folder in position TTHome also works as it should ... so far

So it all seems to work .. we just need to see what happens when the GPS clocks all change

Many thanks for all the help, appreciate it