583655 - Firefox Beta build does not remember App Tabs after restart or save session

Status: RESOLVED DUPLICATE of bug 580512

(Firefox :: Tabbed Browser, defect)

Description

[Marcus Lander]

User-Agent:       Mozilla/5.0 (Windows; Windows NT 6.1; rv:2.0b2) Gecko/20100720 Firefox/4.0b2
Build Identifier: Mozilla/5.0 (Windows; Windows NT 6.1; rv:2.0b2) Gecko/20100720 Firefox/4.0b2

I have created numerous AppTabs from websites such as Lifehacker and Bing. Happens regardless of OS bit (x86 or x64 platform) or if it is Windows 7 or Vista

Uninstalling current stable build of firefox has no effect on issue

Reproducible: Always

Steps to Reproduce:
1. Create an App Tab (use lifehacker.com)
2. Close Firefox
3. Re-initiate Firefox Beta

or

1. Create an App Tab
2. using latest Save Session and Exit extension (force installed), save session and exit
3. Re-initiate Firefox Beta build
Actual Results:  
No App Tabs present

Expected Results:  
App Tabs should be present

I am using default firefox beta theme

numerous extensions are installed due to stable firefox build, but are disabled at start-up