The cause of this is error is that Microsoft Excel is not completely installed on your computer.

In order to rectify this problem, follow these simple steps:

1. Click on the "Start" menu in Windows
2. Click on "Run..."
3. Type exactly the following in the textbox: ”excel /regserver"
4. Press "OK"
5. Wait for few seconds until Word complete runnings
6. Restart your computer and try the Able2Extract conversion again.