-> Unable to install add-ons (extensions or themes)

Check and tell if its working.

no it isn't working...

please help !

Try to install from the add-on's homepage:

• http://browserbackgrounds.com/bbext_extension.php

Check and tell if its working.

i'm doing the same...but same error pops up again and again...i've no clue what's going on.

-> Clear Cookies & Cache

• https://support.mozilla.com/en-US/kb/Template:clearCookiesCache

-> Clear the Network Cache

-> Start Firefox in Safe Mode

• Diagnose Firefox issues using Troubleshoot Mode

When you are in Safe Mode, now try to install the add-on from both the links:

• https://addons.mozilla.org/en-US/firefox/addon/browser-backgrounds
• http://browserbackgrounds.com/bbext_extension.php

Check and tell if its working.

this time it downloaded completely...but same error was shown afterwards...

Take time and try to perform the suggestions mentioned in the following articles:

• Unable to install add-ons (extensions or themes)
• http://kb.mozillazine.org/Unable_to_install_themes_or_extensions_-_Firefox

Check and tell if it working.

i've already read and followed that guide...i read them again as u said..

but,i'm still facing that problem.

Also,does that helps to inform that it was working nicely....i removed it by a mistake... now,i can't even install it..

also,i can't see any extension.rdf and extensions.cache files in the folder of firefox.... i noticed that browser backgrounds folder is still there with all pictures that i used to have...

What may be the problem...?? Please guide me...i've been using this add-on for a long time now !!

That can happen if there is a failure to verify the file via a checksum.
You may have a firewall or anti-virus software that inspect the file and repacks it.

You can try to save the file and install it locally via File > Open File.

I'm running linux...i've no anti-virus software software installed.

Please elaborate what you are trying to say!

-> go to the add-on's download page

• https://addons.mozilla.org/en-US/firefox/addon/browser-backgrounds

A work around is right-click Add to Firefox link -> click Save Link As... -> Save the file on your computer (it will save as .xpi file)

• when the file has been Downloaded, click Firefox button -> go to New Tab and click Open File...
• select the saved .xpi file of your add-on and hit Enter key

Now it should be installed. Check and tell if its working.

my problem is solved...i don't know how,but i tried once more this morning and it was installed successfully!

Thank you all for ur suggestions...^_^