"There was an error starting Zotero" message in Firefox 3.6.3

Hi, I was hoping someone could help with the above. Firefox recorded the following: Error: [Exception... "Component returned failure code: 0x80630001 [mozIStorageService.openDatabase]" nsresult: "0x80630001 (<unknown>)" location: "JS frame :: chrome://zotero/content/xpcom/db.js :: anonymous :: line 1058" data: no]
Source File: chrome://zotero/content/xpcom/zotero.js
Line: 336

Error: Zotero.Proxies.proxies.slice is not a function
Source File: chrome://zotero/content/preferences/preferences.js
Line: 1711

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