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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"

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.

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.

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?

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
12282 solutions 113754 answers

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

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.

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 6 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.

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