318321 - Unable to install extensions with 1.5 on OSX

Status: RESOLVED DUPLICATE of bug 310737

(Toolkit :: Add-ons Manager, defect)

Description

[Carl]

User-Agent:       Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.8) Gecko/20051111 Firefox/1.5
Build Identifier: Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.8) Gecko/20051111 Firefox/1.5

Installed 1.5 on Mac running OSX 10.4.2 and am unable to install extensions. A popup message appears stating - Software installation is currently disabled. Click Edit options... to enable it and try again. So I click Edit Options in the popup and a sliver of a window opens up which is totally useless. BTW, Software installation is NOT disabled and addons.mozilla.org is an allowed site, and yes I was only trying extensions for 1.5. 

Reproducible: Always

Steps to Reproduce:
1. Click on tools, extensions, get more extensions.
2. Locate 1.5 compatible extension, click on install extension.
3. Above problem occurs

Comment 1

[:Gavin Sharp [email: [e-mail]]]

You need to change the xpinstall.enabled pref using about:config.

See http://www.mozilla.com/firefox/releases/1.5.html#issues "All Systems", bullet 4 and http://kb.mozillazine.org/About:config

*** This bug has been marked as a duplicate of 310737 ***