Upgrade from 1.8.5 to 1.9.0 is unsuccessful

I donwloaded the 1.9.0 Windows version and launched the exe on Win7 64 bit OS. The installation has been finished successfully but the program does not start. An error message appears: “The entrance point of the procedure (DiscardVirtualMemory) can not be found in the DLL (KERNEL32.DLL)”

After installing back the 1.8.5 Windows version the application starts properly without any error message.

Thank you for your answer in advance!