LG VX-8600 / AX-8600

Ok, this is the first phone I've had that uses bluetooth. The first day I paired it to my computer, downloaded some pictures and a song to it just fine. Now, all of a sudden when I try to open the OBEX File Transfer folder, I get a message that says "Server does not support this operation." What happened? Is it my computer, or did I somehow download an update that locked the BT file transfer? Or what? I did download the ringtone program, would that have anything to do with it? Please help!

Thanks,
Jon