While our software sometimes generates false positives with some anti-virus software on Windows, rest assured that our software does not contain any malware, so you can safely ignore these warnings.
We have noticed that these false positives are sometimes generated if the "bitness" of the software doesn't match that of the operating system (32/64-bit). So please choose the 64-bit installer (unless you need the legacy 32-bit plugins to use in a 32-bit DAW).