Hi Tas,
Sorry for the confusion.
Having the same version is the recommended way. But as many people used it with different versions anyway, I have fixed the software to handle that correctly. Using the same version is just some extra safety, but it is not really needed.
The 1.6.1/1.7 barrier is still kind of a problem as 1.7 uses different password encoding. I don't know how you can handle that other than doing a manual upgrade over that barrier.
I fixed the Prestools link. Thanks for reporting the problem.
M