# Troubleshooting

If you use a web-service-based FastStats system and drag your Map onto your Selection, the following error message may appear:

The problem is likely to be restrictions on the types of file that your web server can deliver. Select the **Debug Log**. Near the bottom of the log, you may find lines similar to the following:

Text Only

```text
29/03/2011 11:39:45: Can't download Bing Map Key C:\Users\msuch\AppData\Local\Apteco\Discoverer\bing.key: Error downloading http://localhost/Discoverer/Binaries/Maps\bing.key
Got HTTP Error message NotFound (404)
29/03/2011 11:39:45: Can't download countries map shape file to C:\Users\msuch\AppData\Local\Apteco\Discoverer\Countries.shp: Error downloading http://localhost/Discoverer/Binaries/Maps\Countries.shp
Got HTTP Error message NotFound (404)
29/03/2011 11:39:45: Can't download countries map dbf file to C:\Users\msuch\AppData\Local\Apteco\Discoverer\Countries.dbf: Error downloading http://localhost/Discoverer/Binaries/Maps\Countries.dbf
Got HTTP Error message NotFound (404)
```

## Fixing MIME type errors

To fix this error, add `.key`, `.shp`, and `.dbf` files to your MIME types in IIS:

1. Navigate to **Control Panel \> Administrative Tools \> Internet Information Services (IIS) Manager**.
2. Select **MIME Types**.
3. Select **Add** and enter `.key` with MIME type **text/plain**.
4. Select **OK**.
5. Select **Add** and enter `.shp` with MIME type **application/octet-stream**.
6. Select **OK** and repeat for `.dbf`.
7. Once you have added the file extensions, **restart** your website.
8. Delete the **Map** in FastStats and retry dragging and dropping the Map onto your selection to resolve the error.