Problem description: Files >> Options >> Add-ins >> Management: COM Add-in >> Go. The COM Add-in shows "Uninstalled"

Possible reason: iSlide is disabled

Solution

1. Click Files >> Options >> Add-ins >> Management: Disabled Items >> Go. In the pop-up window, select iSlide Tools and click "Enable";
2. Go back to the previous window, click Management: COM Add-ins >> Go. In the pop-up COM Add-ins window, select iSlide Tools to enable it.