OK, thank you for answering.

Like I said, I have tested your add-on for a few weeks with different add-ons and browser crashes. After first install, I had some problems but I think it was my fault because I didn't know how to use your add-on properly. I had only two times Firefox crashes (Aurora). I HAD before installed your add-on very often crashes (especially when Firefox reached 700 MB to 1,5 GB memory usage). I think that your add-on helped to make Firefox more stable?

I will use Nightly Tester Tools. I'll report if I've issues. For now, it works great. 5 stars for your add-on.

Indispensavel

I was hoping that NTT's title-bar editor would do what I want, but it doesn't, so probably the only feature I'll really use (not actually being a nightly tester, just beta) is the "force compatibility" tool, in order not to keep losing add-ons every time I update to a new Beta release number. The other tools do look useful for people who really are living on the Firefox edge.

What I was *hoping* the title-bar editor might do was allow me to customize the title *individually* for each of my open windows. I've lately been trying to use separate windows to group related tabs (e.g. a "social" window for Facebook and LinkedIn tabs, a "work" window for things I'm currently researching for work, etc.). I often have several hundred tabs open (lots of "I'll get back to that"s that never happen...) but it's hard to keep track of what's where when each window just shows the title of the current web page. And no, Firefox's own "tab groups" feature won't do what I want, and I hate, hate, hate that interface. (Clustering *actual* tabs or expand/collapse *actual* tabs would be the way to go -- not a gazillion thumbnails.)

UPDATE -- 25 Feb 2013: Loss of 1 star, from 4 to 3.

I just had my first occasion to try using the "Force Addon Compatibility" feature, when FF updated itself from Version 19 to Version 20 Beta 1. (Does anyone else find it absurd that we're up to "FF 20" with essentially the same product as FF 7? Or is it FF 5?) As a result of the update, my "Tab Utillities" add-on was disabled as being "incompatible".

I saw a warning about the Tab Utilities add-on before I actually applied the update, so I turned on "Force Compatibility" before updating FF. No joy -- the add-on was still disabled after the update. So I turned off the Force Compatibility, then turned it back on and accepted a re-start. Still no joy, the add-on continues to show as disabled. So, as far as I can tell, the Force Addon Compatibility feature doesn't work. Since that's the only feature I was expecting to use, I've deducted one star.

What does work (sort of), in place of NTT, is the trick COKEDUDE posted below, updated. I added

extensions.checkCompatibility.20.0 FALSE

to about:config. Now I can fiddle with Tab Utilities options, but it doesn't seem like Tab Utilities actually WORKS even with that new Config line.

(As a feature request for more serious testers than me, I wonder if forced compatibility could be managed on a per-add-on basis. Someone doing serious testing might want to activate just one "incompatible" add-on at a time to see if they actually work.)

I found out why. About:config is missing this line. Set it to false
extensions.checkCompatibility.17.0

Then install whatever you want.

I love this addon! BUT.....I don't seem to be able to get it to work in Firefox 16.0.2 running on Ubuntu 11.10 :-(

Great for Titlebar text, 5 stars

Fantastic little addon!! .... Is there somewhere I can download it and save it to my PC in case Firefox outdates it lol

To force addon compatibility in Firefox 8 you must have to:

Type about:config in Firefox addressbar and press Enter. It'll confirm, click on "I'll be careful, I promise!" button. Now right-click and select "New", then "Boolean". Give it name:

extensions.checkCompatibility.8.0

And set it's value to false. That's all.

This is the same thing that NTT does with your browser, but it always changes the version number automatically to match the browser's version. That's why I gave it five stars.

What they said, not compatible with Firefox 8. Tried to find your e-mail, but to no avail.

Same here, not working anymore. Plsssss!

Force addon compatibility is not work with FF8.

Firefox 3.6.23 on Solaris 10 SPARC system

I agree with QueenOfStars writing on August 24, 2011

"the version numbering is off; you went from 3.1.7 back to 3.1.5.1 and it doesn't auto-update anymore."

The "make compatible" button no longer displays on the Add-ons menu and Force Addon Compatibility option from the Tools->Nightly Tester Tools menu does nothing.

Is there a plan to fix this and when will this be updated for Firefox 7?

Estaba buscando ésta funcionalidad desde hace rato porque detesto cuando mis extensiones se desactivan con cada cambio de versión de Firefox. Gracias por compartir ésta funcionalidad.

Now that mrtech tools add-on is dead, this is a must have.
Guys, the version numbering is off; you went from 3.1.7 back to 3.1.5.1 and it doesn't auto-update anymore.

Excellent add-on for Firefox. If it wasn't for this little program some of my other add-ons wouldn't work due to compatibility issues. Keep up the good work!

Forcing Add-on compatibility does not work on Aurora 8.0a2, so none of my Add-ons can be enabled.

Property Bee working again. Great add on. Thanks

There is no Customize Titlebar menu entry in TB 5 (see https://bugzilla.mozilla.org/show_bug.cgi?id=673449)
Windows XP SP3

Can't Install older addons and some sites don't work when this is installed

It would be handy if it maintained compatibility with new versions. FF6 was out today and NTT is listed as incompatible -- seems odd for a tool that keeps up with nightly builds! Great work otherwise guys.

sorry for the return visit -- can't find link to donate???? thanks!

can you use this with aurora because i realy want some of these tools plus i cant even find where to download nightly/minefield

Best.

I'm using it to make "Hide Caption Titlebar Plus (Smart)" work in Firefox 5. Working fine for me.

doesn't work with Firefox 5