Maggie_Sue, it might say 6D but the file extension is still the same so you shouldn't have any problems using any of your designs. I know on Viking's web site they have two links at the bottom, one is trouble shooting if its software and the other is the machine. You could email them. My local store here is Bella's Fabric in Suffolk, VA. They have wonderful teachers and staff. You could always call them and tell them you want to talk to one of staff that's good with the 5D and 6D. The good thing is the file extension hasn't changed so you are still good. I have 5D Pro, I told them I wasn't upgrading to 6 until I felt I had learned enough from 5. Right now we are creating blocks in EQ7 and then digitizing them in 5 and 6D, I'm the only one with 5. I downloaded 6 and I get the logo too.
The 6D explorer allows you to set what attributes you see too, which is great. Check both machines websites out since they both have the same software.