> I have the exception for every call of prepareStatement.
> Code like this:

The problem is identified. I have one more issue to fix, then I will release
beta 2. Till then you can try to add

ds.setCharSet("Cp1252");

_after_

ds.setEncoding("WIN1252");

That should help. If it doesn't, you have to wait new beta. I still cannot
explain why the issue was not trapped by our test cases.

Roman