729661 - Netscape.cfg/AutoConfig failed. Please contact your system administrator. Error: pref failed... NS_ERROR_UNEXPECTED ... nsPrefBranch.setIntPref ... js frame :: prefcalls.js :: pref :: line 67

Status: RESOLVED INVALID

(Core :: Preferences: Backend, defect)

Description

[VertigoRay]

Attachment: config_files.zip

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.11 (KHTML, like Gecko) Chrome/17.0.963.46 Safari/535.11

Steps to reproduce:

Upgraded to Firefox 10.0.1 (with the ...exe -ms command) and got an AutoConfig Alert.  Issue reoccurred with version 10.0.2 (with the ...exe -ms command).  I have the attached all of my config files for your reference.  Note, my config files haven't changed since Firefox 8.x and I've confirmed that all the settings and data types are still showing up in about:config as used.


Actual results:

For the first run after the upgrade, I get the shown error box before anything else shows on the screen.
Win7 Ent x64 Firefox 10.0.1:  http://imgur.com/DhPF6
Win7 Ent x86 Firefox 10.0.2:  Didn't get a screenshot.


Expected results:

Shouldn't have gotten the error.  I re-installed Firefox 10.0.2 looking for it to re-create the error, but it didn't.

Comment 1

[VertigoRay]

Note:  There were no plugins/extensions installed into Win7 Ent x64 Firefox 10.0.1.  There was one extension (KeeFox) that also updated on Win7 Ent x86 Firefox 10.0.2.

Comment 2

[Nickolay_Ponomarev]

This message comes from a pref() function: http://mxr.mozilla.org/mozilla-central/source/extensions/pref/autoconfig/src/prefcalls.js#59

Comment 3

[Mike Kaply [:mkaply]]

The toolkit.telemetry preference is a boolean.

So this line:

// disables the request to send performance data from displaying 
pref("toolkit.telemetry.prompted", 2);

is causing that error. It should be:

pref("toolkit.telemetry.prompted", false);