Same here, in v0.9.0.2 Test settings gives me: Unable to Authorize request, Check Your Post Data
In v0.9.0.0 no errors and it's working. But only if I fill in public & priv key in the settings fields. (not Login and Password as suggested...)

About versions:
First I had the same problem that miaoux mentioned, target buy and sell prices are exactly the same as the actual buy and sell prices.
This seems to be fixed as Stephan said earlier. Great work and thx for the fast fix!
So downloaded and installed the software again. But the software version is still 0.9.0.2
Shouldn't this be changed to something like 0.9.0.2.1 so you can see it's changed?
Now I have downloaded 2 versions of 0.9.0.2 but i can only see the difference at the modified date.