Hi,

New to this and hoping that it will be my future method of navigation, as I have now lost count of how many times that I have lost my voice while shouting at my Zumo XT witchcraft GPS !

I have downloaded the app ( yearly subscription ) to my old Samsung S10+, and thought that all was good until I tried to input a coordinate search.

I can navigate perfectly by using the long press method on the offline map ( which I will be using ), but when I try to input coordinates to the same location, the error message ‘ Missing Calculation Files, re-download your map files ‘ appears…three times I have now done as requested ( uninstalled / re-installed ), and have also uninstalled / re-installed the app, but with the same error appearing !

My plan is to use this app with a Samsung A3 or similar, and this is an amazing tool with everything that I need to travel..except navigation by coordinates, and I really need this feature.

It is more than likely something I am doing / have done wrong but I cannot see anything I might have missed during the setup..anyone able to give me some pointers ?

My phone does not have a SIM, and neither will the tablet I am planning to use.

Maps installed using WIFI at home.

The option to use External Storage for maps is not highlighted as I do not want to re-format my micro SD due to there being other apps installed on there that I need to use.

I did previously try to send the maps over from internal to SD , before reading the part where it tells you to format the SD specifically !

But I can however navigate to a place on the map by touching the screen ( long tap ), so that would appear to me that the calculation files are installed ??

Mike.