I am not sure whether or not this is related to the 2.1 upgrade, but I never saw this problem before. When I try to download something to my eris, specifically a book on Aldiko, I get a message saying "please make sure your SD card is present and that your device is not in 'USB Storage' mode." I tried restarting the phone, removing and putting the SD card back in, actually connecting my phone to my computer and making sure I selected charge only. Is there some way to correct this problem? Thanks for the help!