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keep getting "add-on does not match the add-on firefox expected" message

Posted

Since I updated to Firefox 6 I have not been able to add new or replace old add-ons (firebug). When I click any add-on to download from the add-on panel I keep getting a download error message; when I am on the actual add-on page in firefox and click the install button I get a box at the address bar that reads "The add-on from addons.mozilla.org could not be installed because it does not match the add-on Firefox expected"

Additional System Details

This happened

Not sure how often

This started when...

I updated to Firefox 6

Installed Plug-ins

  • The QuickTime Plugin allows you to view a wide variety of multimedia content in Web pages. For more information, visit the QuickTime Web site.
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • Adobe PDF Plug-In For Firefox and Netscape 10.1.0
  • Google Update
  • Shockwave Flash 10.3 r183
  • Picasa plugin
  • Next Generation Java Plug-in 1.6.0_26 for Mozilla browsers
  • 4.0.60531.0
  • NVIDIA 3D Vision plugin for Mozilla browsers
  • NVIDIA 3D Vision Streaming plugin for Mozilla browsers
  • Adobe PDF Plug-In For Firefox and Netscape "9.4.5"

Application

  • User Agent: Mozilla/5.0 (Windows NT 6.1; rv:6.0) Gecko/20100101 Firefox/6.0

More Information

Application Basics
Name
Firefox
Version
6.0
User Agent
Mozilla/5.0 (Windows NT 6.1; rv:6.0) Gecko/20100101 Firefox/6.0
Profile Directory
Open Containing Folder
Enabled Plugins
about:plugins
Build Configuration
about:buildconfig
Extensions
Name
Version
Enabled
ID
Firebug
1.8.1
true
firebug@software.joehewitt.com
Pixlr Grabber
2.1.1
true
{d47a9f51-8281-43fa-f450-f28ef8735e9a}
RSS Ticker
8
true
{1f91cde0-c040-11da-a94d-0800200c9a66}
View Source In Dreamweaver
0.6
true
{432b7585-862d-4384-9340-b66a5e426dca}
Web Developer
1.1.9
true
{c45c406e-ab73-11d8-be73-000a95be3b12}
AI Roboform Toolbar for Firefox
6.9.98
false
{22119944-ED35-4ab1-910B-E619EA06A115}
FoxTab
1.4.3
false
{ef4e370e-d9f0-4e00-b93e-a4f274cfdd5a}
Java Console
6.0.17
false
{CAFEEFAC-0016-0000-0017-ABCDEFFEDCBA}
Java Console
6.0.22
false
{CAFEEFAC-0016-0000-0022-ABCDEFFEDCBA}
Java Console
6.0.23
false
{CAFEEFAC-0016-0000-0023-ABCDEFFEDCBA}
Java Console
6.0.24
false
{CAFEEFAC-0016-0000-0024-ABCDEFFEDCBA}
Java Console
6.0.26
false
{CAFEEFAC-0016-0000-0026-ABCDEFFEDCBA}
Open With Photoshop
0.8
false
{f3f219f9-cbce-467e-b8fe-6e076d29665c}
Modified Preferences
Name
Value
accessibility.typeaheadfind.casesensitive
1
accessibility.typeaheadfind.flashBar
0
browser.history_expire_days.mirror
180
browser.places.importBookmarksHTML
false
browser.places.smartBookmarksVersion
2
browser.startup.homepage
http://www.google.com/
browser.startup.homepage_override.buildID
20110811165603
browser.startup.homepage_override.mstone
rv:6.0
browser.tabs.loadInBackground
false
browser.tabs.warnOnClose
false
extensions.lastAppVersion
6.0
font.minimum-size.x-western
10
network.cookie.prefsMigrated
true
network.image.imageBehavior
0
places.database.lastMaintenance
1313694521
places.history.expiration.transient_current_max_pages
104614
places.last_vacuum
1301328856
print.print_printer
Brother MFC-8860DN USB Printer
print.printer_Brother_MFC-8860DN_USB_Printer.print_bgcolor
false
print.printer_Brother_MFC-8860DN_USB_Printer.print_bgimages
false
print.printer_Brother_MFC-8860DN_USB_Printer.print_command
print.printer_Brother_MFC-8860DN_USB_Printer.print_downloadfonts
false
print.printer_Brother_MFC-8860DN_USB_Printer.print_edge_bottom
0
print.printer_Brother_MFC-8860DN_USB_Printer.print_edge_left
0
print.printer_Brother_MFC-8860DN_USB_Printer.print_edge_right
0
print.printer_Brother_MFC-8860DN_USB_Printer.print_edge_top
0
print.printer_Brother_MFC-8860DN_USB_Printer.print_evenpages
true
print.printer_Brother_MFC-8860DN_USB_Printer.print_footercenter
print.printer_Brother_MFC-8860DN_USB_Printer.print_footerleft
&PT
print.printer_Brother_MFC-8860DN_USB_Printer.print_footerright
&D
print.printer_Brother_MFC-8860DN_USB_Printer.print_headercenter
print.printer_Brother_MFC-8860DN_USB_Printer.print_headerleft
&T
print.printer_Brother_MFC-8860DN_USB_Printer.print_headerright
&U
print.printer_Brother_MFC-8860DN_USB_Printer.print_in_color
true
print.printer_Brother_MFC-8860DN_USB_Printer.print_margin_bottom
0.25
print.printer_Brother_MFC-8860DN_USB_Printer.print_margin_left
0.25
print.printer_Brother_MFC-8860DN_USB_Printer.print_margin_right
0.25
print.printer_Brother_MFC-8860DN_USB_Printer.print_margin_top
0.25
print.printer_Brother_MFC-8860DN_USB_Printer.print_oddpages
true
print.printer_Brother_MFC-8860DN_USB_Printer.print_orientation
0
print.printer_Brother_MFC-8860DN_USB_Printer.print_pagedelay
500
print.printer_Brother_MFC-8860DN_USB_Printer.print_paper_data
1
print.printer_Brother_MFC-8860DN_USB_Printer.print_paper_height
11.00
print.printer_Brother_MFC-8860DN_USB_Printer.print_paper_size_type
0
print.printer_Brother_MFC-8860DN_USB_Printer.print_paper_size_unit
0
print.printer_Brother_MFC-8860DN_USB_Printer.print_paper_width
8.50
print.printer_Brother_MFC-8860DN_USB_Printer.print_reversed
false
print.printer_Brother_MFC-8860DN_USB_Printer.print_scaling
1.00
print.printer_Brother_MFC-8860DN_USB_Printer.print_shrink_to_fit
true
print.printer_Brother_MFC-8860DN_USB_Printer.print_to_file
false
print.printer_Brother_MFC-8860DN_USB_Printer.print_unwriteable_margin_bottom
0
print.printer_Brother_MFC-8860DN_USB_Printer.print_unwriteable_margin_left
0
print.printer_Brother_MFC-8860DN_USB_Printer.print_unwriteable_margin_right
0
print.printer_Brother_MFC-8860DN_USB_Printer.print_unwriteable_margin_top
0
print.printer_Phaser_7760DX_PS.print_bgcolor
false
print.printer_Phaser_7760DX_PS.print_bgimages
false
print.printer_Phaser_7760DX_PS.print_command
print.printer_Phaser_7760DX_PS.print_downloadfonts
false
print.printer_Phaser_7760DX_PS.print_edge_bottom
0
print.printer_Phaser_7760DX_PS.print_edge_left
0
print.printer_Phaser_7760DX_PS.print_edge_right
0
print.printer_Phaser_7760DX_PS.print_edge_top
0
print.printer_Phaser_7760DX_PS.print_evenpages
true
print.printer_Phaser_7760DX_PS.print_footercenter
print.printer_Phaser_7760DX_PS.print_footerleft
&PT
print.printer_Phaser_7760DX_PS.print_footerright
&D
print.printer_Phaser_7760DX_PS.print_headercenter
print.printer_Phaser_7760DX_PS.print_headerleft
&T
print.printer_Phaser_7760DX_PS.print_headerright
&U
print.printer_Phaser_7760DX_PS.print_in_color
true
print.printer_Phaser_7760DX_PS.print_margin_bottom
0.5
print.printer_Phaser_7760DX_PS.print_margin_left
0.5
print.printer_Phaser_7760DX_PS.print_margin_right
0.5
print.printer_Phaser_7760DX_PS.print_margin_top
0.5
print.printer_Phaser_7760DX_PS.print_oddpages
true
print.printer_Phaser_7760DX_PS.print_orientation
1
print.printer_Phaser_7760DX_PS.print_pagedelay
500
print.printer_Phaser_7760DX_PS.print_paper_data
1
print.printer_Phaser_7760DX_PS.print_paper_height
11.00
print.printer_Phaser_7760DX_PS.print_paper_size_type
0
print.printer_Phaser_7760DX_PS.print_paper_size_unit
0
print.printer_Phaser_7760DX_PS.print_paper_width
8.50
print.printer_Phaser_7760DX_PS.print_reversed
false
print.printer_Phaser_7760DX_PS.print_scaling
1.00
print.printer_Phaser_7760DX_PS.print_shrink_to_fit
true
print.printer_Phaser_7760DX_PS.print_to_file
false
print.printer_Phaser_7760DX_PS.print_unwriteable_margin_bottom
0
print.printer_Phaser_7760DX_PS.print_unwriteable_margin_left
0
print.printer_Phaser_7760DX_PS.print_unwriteable_margin_right
0
print.printer_Phaser_7760DX_PS.print_unwriteable_margin_top
0
privacy.popups.showBrowserMessage
false
privacy.sanitize.migrateFx3Prefs
true
security.enable_java
true
security.warn_viewing_mixed
false
Graphics
Adapter Description
NVIDIA Quadro FX 570
Vendor ID
10de
Device ID
040e
Adapter RAM
256
Adapter Drivers
nvd3dum nvwgf2um,nvwgf2um
Driver Version
8.17.12.5981
Driver Date
9-26-2010
Direct2D Enabled
true
DirectWrite Enabled
true (6.1.7600.16699)
ClearType Parameters
ClearType parameters not found
WebGL Renderer
Google Inc. -- ANGLE -- OpenGL ES 2.0 (ANGLE 0.0.0.686)
GPU Accelerated Windows
1/1 Direct3D 10

jorgev 0 solutions 4 answers

Some add-ons can produce this error if there is a problem with the calculated hash in the Add-ons site. This can be fixed on the site, but we need to know about it. Please send a message to amo-admins@mozilla.org explaining the problem and the add-on that gives you this problem.

Question owner

Some add-ons? I just tried to update two existing add-ons (FoxTab and RSS Ticker) and got the message and then tried to get some new add-ons (ColorZilla and Download Statusbar) to no avail.

jorgev 0 solutions 4 answers

Helpful Reply

If this is happening for all add-ons, then the problem is most likely not on the site. We would have certainly heard from many users if those very popular add-ons had incorrect hashes calculated for them.

It sounds like there's something corrupting your downloads and making the hash comparison fail.

Have you tried downloading the file (right click -> save as) and then dropping it directly in the Add-ons Manager?

cor-el
  • Top 10 Contributor
  • Moderator
10777 solutions 96999 answers

Make sure that your security software isn't inspecting and repacking the extension file.

foxyfoxy 0 solutions 1 answers

Login as admin and install. Worked for me ;)

edit: Actually, I had to install it as admin and then I was able to install it as a regular user as well.

Modified by foxyfoxy

swbitton 0 solutions 3 answers

I am able to install add-ons directly from the owners websites if they have them but not from Mozilla's add-on page.