Update Scanner

I have been using UpdateScanner 2.1.0.9 to fabulous effect for a month or so now, but the extension stopped working a couple of days ago. It does not perform any of the scheduled scans anymore, and I can only run a full manual scan to find the updates.

I usually automatically update my extensions, so I really don't recall which of the other ones I updated may have conflicted with UpdateScanner. I've tried disabling some of the ones I remember updating, but it hasn't helped.

The other extensions all work as they should.

I wonder if you might have some idea of which one is causing a problem. I rely on UpdateScanner a lot and would love to have it functional again. I use the latest stable version of FF 2.

The list of my extensions:

- Adblock Filterset.G Updater 0.3.1.3: http://www.pierceive.com/
- Adblock Plus 0.7.5.4: http://adblockplus.org/
- Adblock Plus: Element Hiding Helper 1.0.4: http://adblockplus.org/
- Add Bookmark Here 2 1.0.20070528: https://addons.mozilla.org/firefox/3880/
- Add to Search Bar 1.7: http://maltekraus.de/Firefox/search-tools
- All-in-One Sidebar 0.7.5: http://firefox.exxile.net/aios/
- Auto Copy 0.6.4: http://autocopy.mozdev.org
- Backgroundimage Saver 0.1.2: http://www.mobe.de/firefox/backgroundsaver
- CacheViewer 0.4.3: http://park2.wakwak.com/~benki/
- Check4Change 1.6: http://check4change.mozdev.org/
- ColorfulTabs 2.0.11: http://www.binaryturf.com/
- CoLT 2.4.0: http://www.borngeek.com/firefox/colt/
- Context Search 0.4.1: http://www.cusser.net
- CookieSwap 0.5.1: http://cookieSwap.mozdev.org
- Custom Buttons² 2.0.7.5: http://custombuttons2.com/
- DisableBackspaceNavigation 0.2.1: http://www.allesdurcheinander.de/disablebackspacenavigation/
- Distrust 0.8: http://www.gness.com/
- Dog Ears 1.5: http://yellow5.us/firefox/dogears/
- Download Statusbar 0.9.6.1: http://downloadstatusbar.mozdev.org/
- Drag de Go 0.2.5: http://forums.mozillazine.org/viewtopic.php?t=440259
- FEBE 5.3.1: http://customsoftwareconsult.com/extensions
- FireShot 0.36: http://screenshot-program.com/fireshot/
- FlashGot 0.9.7: http://flashgot.net
- Forecastfox l10n 0.7.2008022901: http://extensions.geckozone.org/Forecastfox
- Foxmarks Bookmark Synchronizer 2.0.45: http://www.foxmarks.com/
- gBrain 0.5.4: http://www.splitbrain.org/go/gbrain
- GetPicturesList (FF extension) 0.6: http://gpl.tracking-celebs.info/
- Gmail Manager 0.5.4: http://www.longfocus.com/firefox/gmanager/
- Greasemonkey 0.7.20080121.0: http://www.greasespot.net/
- Image Toolbar 0.6.4: http://www.cusser.net
- imagepref 2005.11.28: https://addons.mozilla.org/extensions/authorprofiles.php?application=fir...
- Java Console 6.0.02: http://www.google.com/search?q=Firefox%20Java%20Console
- Linkification 1.3.3: http://yellow5.us/firefox/linkification/
- LiveJournal Addons 7.7.2: http://www.google.com/search?q=Firefox%20LiveJournal%20Addons
- Menu Editor 1.2.5: http://menueditor.mozdev.org/
- MR Tech Local Install 5.3.2.6: http://www.mrtech.com/extensions/local_install/
- myurlbar_a 2006.04.20: http://www.google.com/search?q=Firefox%20myurlbar_a
- Organize Status Bar 0.5.2: http://yellow5.us/firefox/osb/
- PDF Download 1.0.1.1: http://www.pdfdownload.org
- PriceDrop 1.05: http://pricedrop.stuffstuff.org
- QuietUrl 1.3.0.0: http://www.quieturl.com
- ReminderFox 1.6.3: http://reminderfox.mozdev.org
- Resize Search Box 0.0.8: http://dragtotab.mozdev.org/resizesearchbox/
- Resurrect Pages 1.0.8: http://trac.arantius.com/wiki/Extensions/Resurrect
- Save Image in Folder 1.2: http://mozext.achimonline.de
- Save Images 0.4.9: http://www.google.com/search?q=Firefox%20Save%20Images
- SaveURI 0.3.1.2: http://www.scharan20.googlepages.com/
- Screen grab! 0.93: http://andy.5263.org/screengrab/
- SearchWords 0.3: http://www.screwedbydesign.com/software/searchwords
- Second Search 0.4.2008021501: http://piro.sakura.ne.jp/xul/_secondsearch.html.en
- Session Manager 0.6.1.13: http://sessionmanager.mozdev.org/
- Show Picture 1.0: http://www.google.com/search?q=Firefox%20Show%20Picture
- Smart Middle Click 0.5: http://spiers.free.fr/
- Stylish 0.5.6: http://userstyles.org/stylish/
- SubmitToTab 0.3.5: http://dragtotab.mozdev.org/submittotab/
- Tab History 1.0.4: http://www.penguinus.com/dev/tab_history
- Tab Mix Plus 0.3.6.1.080416: http://tmp.garyr.net
- TimeTracker 1.2.3: http://www.usablehack.com
- Title Save 0.1d: http://
- Update Bookmark 0.0.4.1: http://www.chuonthis.com/extensions/
- Update Notifier 0.1.5.3: http://www.longfocus.com/firefox/updatenotifier
- Update Scanner 2.1.0.9: http://updatescanner.mozdev.org
- URL Fixer 1.4.3: http://www.chrisfinke.com/addons/url-fixer/
- WeatherBug 2.0.0.3: http://weather.weatherbug.com
- YesScript 1.3: http://www.google.com/search?q=Firefox%20YesScript

Thanks!