Component returned failure code: 0x8000ffff

Question

Component returned failure code: 0x8000ffff (NS_ERROR_UNEXPECTED) [nsIPrefBranch.lockPref]" nsresult: "0x8000ffff (NS_ERROR_UNEXPECTED)" location: "JS frame :: prefcalls.js :: lockPref :: line 109" data: no
Didn't have this error until incorporated mozilla.cfg file. One of the settings must be causing this and I can't figure out which.
Here is cfg info:
''# Mozilla Global Preferences
/* This file is to set and lock default preferences.
* Locate the settings in the prefs.js you want to make global and
* copy them here. To lock the setting change the Pref to
* lockPref.
lockPref("accessibility.browsewithcaret", false); //dont' use cursor keys to navigate within pages
defaultPref("accessibility.typeaheadfind", true); //Search for text when I start typing
defaultPref("accessibility.typeaheadfind.flashBar", 0); //don’t flash toolbar when text is found
lockPref("general.autoScroll", false); //don't use autoscrolling
lockPref("app.update.auto", false); //disable automatic update
lockPref("app.update.enabled", false); //disable updating Firefox
lockPref("browser.bookmarks.restore_default_bookmarks", false); //restore default firefox bookmarks
defaultPref("browser.cache.disk.capacity", 1048576); //cached settings
defaultPref("browser.cache.disk.smart_size.first_run", false); //cached settings
defaultPref("browser.cache.disk.smart_size_cached_value", 1048576); //cached settings
lockPref("browser.download.useDownloadDir", false); //don't use download directory-always ask
defaultPref("browser.download.manager.retention", 0); //remember downloads
lockPref("browser.feeds.showFirstRunUI", false); //disable initial RSS intro
defaultPref("browser.formfill.enable", true); //don't remember forms and search bar
lockPref("browser.fullscreen.autohide", false); //always show URL and tab bar
lockPref("browser.history_expire_days", 30); //clear history after 30 days
lockPref("browser.history_expire_days_min", 30); //minimum 30 days to keep history
lockPref("browser.link.open_external", 1); // open pages in new tab
lockPref("browser.link.open_newwindow", 1); // open pages in new tab
lockPref("browser.places.importBookmarksHTML", false); //don't import bookmarks
lockPref("browser.places.importDefaults", false); //don't import other default settings
lockPref("browser.rights.3.shown", true); //don't show copyright notice
defaultPref("browser.search.suggest.enabled", true); //disable search suggestions
lockPref("browser.shell.checkDefaultBrowser", false); //disable default browser check
lockPref("browser.startup.page", 1); //show homepage at startup
lockPref("browser.startup.homepage", "http://intranet.domain.com"); //home page URL
pref("browser.tabs.autoHide", false); //always show tab bar
defaultPref("browser.tabs.insertRelatedAfterCurrent", false); //load new tabs last
defaultPref("browser.tabs.loadBookmarksInBackground", true); //new tabs in background
defaultPref("browser.tabs.warnOnClose", false); //Warn when closing multiple tabs
defaultPref("browser.tabs.warnOnOpen", false); //don't warn on opening multiple tabs
lockPref("browser.taskbar.previews.enable", true); //enable taskbar previews
defaultPref("browser.urlbar.autoFill", true); //enable URL autocomplete
lockPref("config.lockdown.disable_themes", true); //disable themes
lockPref("general.smoothScroll", true); //Use smooth scrolling
lockPref("general.warnOnAboutConfig", true); //display warning prompt
defaultPref("layout.spellcheckDefault", 1); //Check my spelling as I type
lockPref("mozilla.widget.raise-on-setfocus"); //disable focus stealing
defaultPref("mozilla.widget.raise-on-setfocus", false); //don't focus new tabs
lockPref("network.automatic-ntlm-auth.trusted-uris", "proxy,domain"); //sites that are allowed to automatically authenticate via NTLM
lockPref("network.cookie.lifetimePolicy", 2); //keep cookies until I close Firefox
lockPref("network.cookie.prefsMigrated", true); //don't prompt to migrate cookies
lockPref("network.negotiate-auth.delegation-uris", "proxy");
lockPref("network.negotiate-auth.trusted-uris", "proxy"); //sites that are permitted to engage in SPNEGO authentication with the browser
defaultPref("network.http.max-connections-per-server", 32); //sites for which the browser may delegate user authorization to the server
defaultPref("network.http.pipelining", true); //enable HTTP pipelining
defaultPref("network.http.pipelining.maxrequests", 7); //max http requests
defaultPref("network.http.pipelining.ssl", true); //always enable HTTPS pipelining
defaultPref("network.http.proxy.pipelining", true); //enable HTTP pipelining
pref("network.proxy.type", 4); //auto-detect proxy settings
lockPref("pref.privacy.disable_button.view_passwords", true); //Disable the Show Passwords Button
lockPref("privacy.donottrackheader.enabled", true); //no targeted ads
lockPref("privacy.item.formdata", true); //clear saved form data
lockPref("privacy.item.offlineApps", true); //clear offline apps data
lockPref("security.enable_ssl3", true); //Use SSL 3.0
lockPref("security.enable_tls", true); //Use TLS 1.0
defaultPref("security.warn_entering_weak", false); //warn when about to view a page that uses low-grade encryption
defaultPref("security.warn_viewing_mixed", true); //warn when about to view an encrypted page that contains some unencrypted information
defaultPref("security.warn_entering_secure", false); //warn when about to view an encrypted page
defaultPref("security.warn_leaving_secure", true); //warn when leave an encrypted page for one that isn't
defaultPref("security.warn_submit_insecure", true); //warn when submit information that's not encrypted
lockPref("signon.rememberSignons", false); //don't remember passwords
lockPref("toolkit.telemetry.prompted", false); //don't show send info to mozilla prompt
defaultPref("view_source.wrap_long_lines", true); //enable line wrapping
lockPref("xpinstall.whitelist.required", true); //Warn when sites try to install add-ons''

Answer 1

Start Firefox in <u>[[Safe Mode|Safe Mode]]</u> to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).
*Do NOT click the Reset button on the Safe Mode start window.
*https://support.mozilla.org/kb/Safe+Mode
*https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes