CthulhuApproved

We have a GraphTec CE6000-60 at our shop and it's doing a strange thing for 2/3 users. When we push a file from illustrator to Cutting Master it looks as though it fits perfectly - however the CE6000 isn't cutting the vertical lines on the left side of the image. This is happens in both Cutting Master 3 & 4, in fact we only have one user not experiencing this issue (He's using 3) Any ideas as to what may cause this?

We've tried several designs result is the same.