I am having the same problem. Did anyone ever figure this out? I have been transferring files just fine up until this past weekend. Now, when I try to import from the PC to my SE400, it says it is transmitting, but nothing shows up on the display screen. Not sure if there is a problem with my machine or something I am doing wrong. I am using a .pes file, smaller than 4x4 and it doesn't have any special characters in the filename. It is unzipped. I basically put together a monogram from my Sew What Pro software.