Hi folks, I've been using Zotero on Firefox 3.0.1 under WindowsXP. (I use it at work where our computers are locked down - we can't execute any .exe files.) One day, the yellow-orange alert (with an exclamation point) appeared on the Zotero marker in the lower right corner of the browser and has been there whenever I start Firefox. The hover text says "There was a error starting Zotero." If I try to select Zotero from the Tools menu it gives me the same message. I can access the preferences from Add-ons, but can't diagnose what's wrong or how to correct it. Any ideas?