Hi, we have just bought a 730 and a 4 gb SDHC card. I uploaded the updates and some music then disconnected to use and now it is stuck on the screen showing the SDHC coming out and a cross going across the SDHC card. If I take it out it asks to put a SD card in? I tried putting the SD card from my Tomtom one in and it didnt like that either. Can someone tell me what the problem is? Thanks
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