286039 - Startup fails after first time Firefox is closed

Status: RESOLVED DUPLICATE of bug 283680

(Firefox :: General, defect)

Description

[Alan Escreet]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.7.6) Gecko/20050226 Firefox/1.0.1
Build Identifier: Firefox/1.0.1

After freshly installing Firefox 1.0.1, the program can be executed normally.

Once closed (computer shutdown not required), Firefox does not start up again.
Instead the following message is displayed:
"The program must close to allow a previous installation attempt to complete.
Please restart."
It does not matter if the computer is restarted, this message always appears and
the only method I have found to circumvent this is to re-install version 1.0.1.

I had previously only one plugin installed (no themes or anything else) - the
non-recommended Tabbrowser Extensions. Since this is known to be buggy (though I
have not experienced any problems with it), I uninstalled the extension and
tried installing Firefox 1.0.1 again. The problem persists even with a 'naked'
Firefox.

Reproducible: Always

Steps to Reproduce:
1. Install Firefox 1.0.1
2. Close Firefox
3. Start Firefox

Actual Results:  
Message displayed:
"The program must close to allow a previous installation attempt to complete.
Please restart."
Firefox does not start.

Expected Results:  
Firefox starts.

Comment 1

[Alan Escreet]

Tried executing Firefox (safe mode) instead and this worked.
I then discovered that I had two parallel installations of Firefox on the
machine and the start menu shortcut pointed to the old version (1.0), which of
course was superceded when I installed 1.0.1. Executing the correct installation
did not have any problem.

Changed bug severity to trivial - the error message is correct, but would be
nice to give a hint that the Firefox version that was attempted to be executed
is not the current version with repect to the latest installed version.

Comment 2

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

The solution is to delete the xpicleanup.dat file in your Firefox program dir.

*** This bug has been marked as a duplicate of 283680 ***