Two Different Installs, No TwitKit in the Tools Menu

I have installed twitkit on two different machines and it doesn't show up in the tools menu on either. Running Firefox 3.0.

Here is my config from one of the installations:

Generated: Sat Jul 12 2008 17:26:19 GMT-0400 (Eastern Daylight Time)
User Agent: Mozilla/5.0 (Windows; U; Windows NT 5.2; en-US; rv:1.9) Gecko/2008052906 Firefox/3.0
Build ID: 2008052906

Enabled Extensions: [38]
- All-in-One Sidebar 0.7.6: http://firefox.exxile.net/aios/
- BBCode 0.5.2.2: http://www.mrtech.com/extensions/#bbcode
- Better Gmail 2 0.5.2: http://www.ginatrapani.org/workshop/f...
- ColorfulTabs 3.2: http://binaryturf.com/
- ColorZilla 2.0: http://www.colorzilla.com/
- DownloadHelper 3.1.1: http://www.downloadhelper.net
- FEBE 6.0b(20080705_185002): http://customsoftwareconsult.com/exte...
- FireShot 0.55: http://screenshot-program.com/fireshot/
- FoxyTunes 3.0.3.1: http://www.foxytunes.com/
- Gmail Space 0.5.94: http://www.getgspace.com/
- GMarks 0.9.9: https://addons.mozilla.org/en-US/fire...
- IE Tab 1.5.20080618: https://addons.mozilla.org/firefox/ad...
- iMacros for Firefox 6.0.5.4: http://www.iopus.com/imacros/firefox
- Interclue 1.5.6: http://interclue.com/
- Java Console 6.0.01: http://www.google.com/search?q=Firefo...
- Java Console 6.0.05: http://www.google.com/search?q=Firefo...
- LinkedIn Companion for Firefox 3.1.1: http://www.linkedin.com
- Mahalo Share 1.4: http://www.mahaloshare.com/
- MeasureIt 0.3.8: http://www.kevinfreitas.net/pro/exten...
- Minimap Sidebar Extension 0.2.6: http://www.google.com/search?q=Firefo...
- MR Tech Toolkit (formerly Local Install) 6.0.1: http://www.mrtech.com/extensions/
- PicLens 1.7.0.3459: http://www.piclens.com/
- Sage-Too 1.0.0: http://sage.blat.co.za
- ScribeFire 2.2.9: http://www.scribefire.com/
- StumbleUpon 3.25: http://www.stumbleupon.com/
- Stylish 0.5.7: http://userstyles.org/stylish/
- Tab Mix Plus 0.3.6: http://tmp.garyr.net
- Tab Scope 0.2.2.8: http://www.xuldev.org/tabscope/
- ThumbStrips 1.5.1: http://intuitlabs.com/thumbstrips
- TinEye Image Search 0.4: http://tineye.com/
- Torrent Finder Toolbar 1.2.4: http://torrent-finder.com/
- TwitKit 1.0: http://engel.uk.to/twitkit/
- URL Fixer 1.4.3: http://www.chrisfinke.com/addons/url-...
- Web Developer 1.1.6: http://chrispederick.com/work/web-dev...
- Winamp Toolbar 5.2.1.1: http://www.winamp.com
- Xinha Here! 0.13: http://www.hypercubed.com/projects/fi...
- Yoono 5.0.4: http://www.yoono.com
- Zend Studio Toolbar 2.1: http://www.zend.com

Disabled Extensions: [2]
- Copernic Desktop Search 2 Toolbar 2.0.0.2280: http://go.copernic.com?dest=cds23home...
- TwittyTunes 0.5.4: http://www.foxytunes.com/twittytunes/

Total Extensions: 40

Installed Themes: [5]
- Aero Fox 3.0.1: http://www.virtusdesigns.com
- Classic Compact 3.0.8: http://blog.environmentalchemistry.co...
- Default: http://www.mozilla.org/
- LittleFox 1.8.33: http://www.geocities.com/alfredkayser...
- PitchDark 3.0.2: http://thebankshow.com/projects/pitch...

Installed Plugins: (7)
- Adobe Acrobat
- IE Tab Plug-in
- Java(TM) Platform SE 6 U5
- Mozilla Default Plug-in
- QuickTime Plug-in 7.5 (861)
- Shockwave Flash
- Silverlight Plug-In

Thanks,

Gtoddv