Firefox Portable

I got an automatic update from v5.01 to v6.0 today.
FF6 never started again and I don't no what the problem is.
Can I please have a clue how to solve this.
I have the same problem on all my machines, XP, Vista Win7...
This is all I get when starting:

XML-tolkningsfel: odefinierad entitet
Adress: chrome://browser/content/browser.xul
Radnummer 233, Kolumn 5:

its seems that u stop working on fire fox 6.. its still at beta section.. but we are herebly waiting for 6.. pls inform us...

I've really done it now. My Firefox restore session hasn't been working, and since no-one replied to my earlier post, I thought I'd just reinstall it.

But... now I seem to have lost all my settings, addons, extensive bookmarks, but most importantly, my Scrapbook pages which included lots of business sales receipts for online orders which I was getting ready to print for my tax records.

Is there anyway to recover this? I know the obvious answer is to go to my backup, but I foolishly don't have a recent backup. Would Firefox have moved the old files somewhere else?

Please help me...

Why is the browser history automatically deleted after a period of time?
Is there a way (I searched online and it said hardly a way to keep it within a custom-defined period) to keep it in Firefox 4?

https://www.facebook.com/photo.php?pid=7654074&l=46e09d3ed5&id=615205698

Image pretty much speaks for itself. Both sets of window buttons (e.g. minimize, close) work. Only the top one can be double-clicked on for maximize/restore, though.

Right-clicking and adding, then removing the menu bar removed one, but the tabs are now below the address bar, not up on the title bar, and I have a second taskbar entry for "Mozilla Firefox" (where the first one is the title of the page).

Is the remark to the Known Issues in the support yet applicable, that Firefox currently requires a local JVM? Or can I now use the portable version jPortable?

Ever since my last few Firefox updates (now using 5.0.1 on a Windows 7 machine), the Restore Session feature hasn't been working. The tab titled "Restore Session" comes up, but there are no previous sessions listed in the box to restore, so of course, nothing gets restored. Has anyone else seen this? Is there a fix for it?

Thanks

I've been using the Mozilla browser since it was called Phoenix. Version 5 is my first foray into its portable iteration. I use FF heavily for commerce and banking and verified all was A-OK especially with my security layering. I began to run it in Sandboxie and again all was A-OK *except* for urlclassifier3.sqlite. It does not update at all. I do notice urlclassifierkey3.txt occasionally getting written meaning that the operation is functional but the sqlite file isn't appended. I wasn't able to gain a solution at the Sandboxie forum. Any ideas? Thanks!

I`m running Portable FireFox 5.0 (Version 4.0 > update to 5.0) under windows 7.
It is not installed on a pendrive but in partition E: of harddisk.
There are a lot of traces left in System partition C:
C:\Users\"username"\AppData\Local\Mozilla\Firefox\Profiles\995lnza3.default\ (Files and folders)
C:\Users\"username"\AppData\Roaming\Mozilla\Firefox (Files and folders)

The question is: Can I avoid this?
What happens if I delete all these files and folders?

Thank you. !!

The link "Firefox source" on the page https://portableapps.com/apps/internet/firefox_portable
points to a FileZilla repository.

This is wrong. Please fix it and give us the sources.

PS: this is a known failure since at least February 2011.
So the current state violates the license!