Error in installing Add ons

[NaIdz]

Hi every.anyone knows how can i fix my firefox??im gonna install fireftp and stumbleupon add-ons but it always error.
its says "connection not encrypted"

http://img244.imageshack.us/img244/2293/30909719zx4.png http://img244.imageshack.us/img244/2293/30909719zx4.bd0572e8f3.jpg

plz help me.tnx

[bloggerboy86]

I guess your add on extension file is corrupted.

1.Close firefox.
2. Go to user profile - For XP see in my documents for %APPDATA%\Mozilla\Firefox\Profiles\xxxxxxxx.default\
FOR 98 & Me - C:\WINDOWS\Application Data\Mozilla\Firefox\Profiles\xxxxxxxx.default\
3.Delete these extensions
* extensions.ini
* extensions.cache
* extensions.rdf
4. Restart firefox

PS : Deleting these files will not result in loss of add-on or their settings.

Cheers

[Twine]

Never seen that error before... maybe try it in IE?