Looks like windows build was broken. We had exactly the same problem before bug fixing.
I can not verify it as I have no access to windows machine, but it looks like that.
Could someone check it and recompile binary for windows?
*** 500 AMBER bounty for fixing this issue. ***
Alternatively you may try to make your own build from sources.
I will also try to find a way how to make windows executables using linux,
but it may take a lot of time as I am not yet familiar with cross-compilation.
Hmm
seems checkpoint issue.
https://github.com/ambercoin/ambercoin/blob/master/src/checkpoints.cppHas invalid checkpoint it seems