Based on available information, (or similar file formats like .rar ) is frequently associated with unverified software or potentially malicious files rather than a standard official release of the SilverBullet productivity tool.
If you intended to use the legitimate personal knowledge management platform, follow these official steps: SilverBullet.v1.1.2.zip
Absolute know-nothing beginner questions - v1 Based on available information, (or similar file formats