SnapGene 5.2.5 for Windows can't detect Common Features
The initial release of SnapGene 5.2.5 for Windows was missing a Common Features database. The Common Features database is required for detection of common features and also, for detection of attB sites in Gateway cloning procedures.
To fix this issue please update to SnapGene 220.127.116.11. To update, click SnapGene menu Edit → Check for Updates and follow the prompts.