Originally Posted by Irving

Had a similar problem on my Viewsonic V37... solution was 4 stages...

Stage 1: get an SD card that actually worked reliably... eventually ended up with a Panasonic one after testing out 5 or 6 different ones (usual suspects... Lexar, Sandisk, Fuji, PNY... mostly Chinese manufacturer, Panasonic is Japan). That's a well known prob with SD cards. Only way to really check them out is to write bulk files directly from PC to USB reader then check you can read all the files from the card in the PPC- i used MP3 and MPEG files as these stress the card access mechanisms well. Most of the cards formatted fine in the PPC and seemed to work but wouldn't actually let you read files properly. Also bulk xfr via activesync is slooooowwwww and i suspect not all that reliable....

Stage 2 was to install TomTom via activesync and install maps to SD card using USB reader, put SD Card in PPC and soft reset. Even then TomTom wouldn't find the maps!

Stage 3... use Activesync to install small map to main memory to allow TomTom to start properly... then use Navigator Properties to change map set to those on the SD Card... it finds them ok on SD card after accessing a map on internal memory. I have no idea why this works, nor did TomTom, but it does...

Stage 4: Once thats done, you can remove the maps from local memory and its fine after that.

Hope that helps