Little-known anti-malware programs display warnings, which are often identified as false positive. Nevertheless, it is recommended to recheck the file with your antivirus software after downloading.
We do not have a download file for the latest version (1.0), but you can try downloading it from the developer's site
Download version 0.82 from Mac Informer
Version: 0.82
Date update: Dec 21, 2012
File name: novashell.dmg
Size: 19.2 MB
