Hey guys, can't seem to find solution to this anywhere; I have a red DS - actually a friend's - that wont load the R4 up - says there's nothing in the slot. The DS was working fine with the R4 until a couple of weeks ago when it suddenly stopped working with no other apparent problems. I have tried updating / reformatting the card. Commercial carts work fine. Anyone experienced this or know what might have caused it? Thanks in advance.