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Firefox 18 crashes on start up. Here's the crash report ID bp-a9144ba4-9d60-40ee-b2f5-300ba2130117


I am using Mac OSX 10.8.4. I upgrades to Firefox 18. When launching firefox a crash report appears stating that "firefox had a problem and crashed." I need to figure out how to uninstall it and reinstall it or find some other way to use the Firefox browser. Help.

Additional System Details


  • User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_2) AppleWebKit/536.26.17 (KHTML, like Gecko) Version/6.0.2 Safari/536.26.17

More Information

I've tried holding down the option button and launching firefox in safe mode, but it still doesn't work. I've tried selecting every option that appears, but it still doesn't work.

Ralph Daub
  • Administrator
60 solutions 436 answers

Hi besmith,

I am sorry to hear that you are receive a crash report when attempting to launch Firefox 18 on your Mac OSX 10.8.4.

Certain Firefox problems can be solved by performing a Clean reinstall. This means you remove Firefox and any leftover program files and then reinstall Firefox. Please follow these steps one by one:

  1. Download the latest Desktop version of Firefox from http://www.mozilla.org and save the setup file to your computer.
  2. After the download finishes, close all Firefox windows (click Exit from the Firefox or File menu) and confirm all upcoming messages.
  3. Now, uninstall Firefox by following the steps mentioned in the Uninstall Firefox article.

Now, go ahead and reinstall Firefox:

  1. Double-click the downloaded installation file and go through the steps of the installation wizard.
  2. Once the wizard is finished, choose to directly open Firefox after clicking the Finish button.

Please report back to see if this helped you!


- Ralph

  • Top 10 Contributor
  • Moderator
10780 solutions 97024 answers

Helpful Reply

This could be a problem with a plugin (Java?)

Try to delete the pluginreg.dat file in the Firefox Profile Folder and maybe addons.sqlite as well to reset the plugin registry databases.

  • /Users/<user>/Library/Application Support/Firefox/Profiles/<profile>/

In Mac OS X v10.7 and later, the $HOME/Library folder is a hidden folder.

Open Finder and use one of these:

  • Go > Go To Folder (Shift-Command-G) and in the dialog type: ~/Library
  • Open the "Go" menu and hold down the Option key to make the Library appear

Create a new profile as a test to check if your current profile is causing the problems.

See "Creating a profile":

If the new profile works then you can transfer some files from an existing profile to the new profile, but be careful not to copy corrupted files.

Question owner

Thank you. It worked.

  • Top 10 Contributor
  • Moderator
10780 solutions 97024 answers

Can you tell us what you needed to do to fix this?