When you get the message saying that it is older and needs to be converted, the next thing would be telling you that you need to be logged in exclusively to convert. If that doesn't happen, that means that you can't make that kind of jump (from 12 to 15) and you would need to update in steps, 13, 14, then 15. To do that, you need to have those versions of the software on older computers. MB7 is just the folder that holds the companies.

is there a place I can download version 11 and 12?