Hi

Firefox add-ons are developed by many independent third parties. I recommend that you contact the developer of the add-on that you mention who should be able to provide help and support for their software. You can find their contact details on the add-on page.

I hope this helps, but if not, please come back here and we can look into a different solution for you.

You can consider to try other download extension if the VDH extension isn't working properly.

If you have submitted crash reports then please post the IDs of one or more recent crash reports that start with "bp-".

• bp-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx

You can find the report ID of recent crash reports on the "Help > Troubleshooting Information" page (about:support).

• click the "All Crash Reports" button on this page to open the about:crashes page and see all crash reports.

Alternatively you can open about:crashes via the location/address bar.

See also:

• http://kb.mozillazine.org/Mozilla_Crash_Reporter
• https://support.mozilla.org/kb/Mozilla+Crash+Reporter