Workaround...

From http://www.pcworld.com/article/200103/fix_outlook_general_failure_error_for_email_links.html:

Hassle-Free PC Fix Outlook 'General Failure' Error for E-Mail Links

By Rick Broida, PCWorld Jun 29, 2010 12:45 PM

(Note: These instructions apply to Windows Vista and 7 only.)

1. Click Start, type regedit, and then press Enter.

2. Navigate to the following entry: HKEY_CLASSES_ROOT\FirefoxURL\shell\open\ddeexec

3. In the center pane, double-click the Default entry, then remove whatever value is there (it'll probably be a weird string of numbers and commas).

4. Click OK, then exit Regedit.

5. If Outlook and/or Firefox are open, close them, then restart them.

Every single time that I have to do an update on Firefox I then have to go back into the regedit and follow the directions again in order to prevent this error. The issue should be corrected by Mozilla on their next update. To be honest, it is kind of annoying!! This has been an issue for several months, and I am tired of having to fix their mistakes! MOZILLA!!! PLEASE FIX THIS ISSUE!!!

I HAVE ATTACHED A SCREEN SHOT OF THE ERROR THAT I AM GETTING.

I agree with wads24 , in the future could´t have problems as this one. Or us are working to Mozzila testing this file? and without salarie?