I just bought a tom tom XL i believe, model number : E21406H04195, didn't come with a sd card . i have bought a 16 GB SD card for it and a 2 GB as-well and, it did not register. the tom tom wont even let me into the settings without some sort of "correct"SD card inserted. i don't know where to go from here. can anyone help me. i am so frustrated with this thing.