Indeed. I'm getting the same issue. Windows Defender thinks it's a trojan. Most likely a false positive, but the dev might want to look into what could be causing it.
Sorry for the inconvenience. This is a known problem. ZGameEditor compiles executables so small that some antivirus think it's a virus... And it's very annoying for me. You can read the full discussion about that pesky problem here: http://www.emix8.org/forum/viewtopic.php?t=1339
Is your Window Defender's database updated to the latest version? It's been a while since that one throw a heuristic false positive.