I am experimenting with the firefox 3.5 rc on linux (ubuntu jaunty). I have a working, and indispensable setup with zotero 2.0b4 on firefox 3.stable. This syncs through the zotero servers, and also does file synching through a webdav server on my desk. So far so good.

When I try to set up synching with zotero in firefox 3.5, I get the dread error -15 when I test it. The relevant debug output says:

zotero(3):     'name' => "NS_ERROR_XPC_JAVASCRIPT_ERROR_WITH_DETAILS"
    'QueryInterface' => function(...){...} 
    'message' => "'[JavaScript Error: "this._storage is null" {file: "file:///usr/lib/xulrunner-1.9.1/components/nsLoginManager.js" line: 527}]' when calling method: [nsILoginManager::findLogins]"
    'result' => 2153185313
    'filename' => "chrome://zotero/content/xpcom/storage.js"
    'lineNumber' => 122
    'columnNumber' => 0
    'location' ...
        'QueryInterface' => function(...){...} 
        'language' => 2
        'languageName' => "JavaScript"
        'filename' => "chrome://zotero/content/xpcom/storage.js"
        'name' => "anonymous"
        'lineNumber' => 122
        'sourceLine' ...
        'caller' ...
            'QueryInterface' => function(...){...} 
            'language' => 2
            'languageName' => "JavaScript"
            'filename' => "chrome://zotero/content/xpcom/storage.js"
            'name' => "anonymous"
            'lineNumber' => 53
            'sourceLine' ...
            'caller' ...
                'QueryInterface' => function(...){...} 
                'language' => 2
                'languageName' => "JavaScript"
                'filename' => "chrome://zotero/content/xpcom/storage.js"
                'name' => "anonymous"
                'lineNumber' => 1642
                'sourceLine' ...
                'caller' ...
                    'QueryInterface' => function(...){...} 
                    'language' => 2
                    'languageName' => "JavaScript"
                    'filename' => "chrome://zotero/content/preferences/preferences.js"
                    'name' => "verifyStorageServer"
                    'lineNumber' => 246
                    'sourceLine' ...
                    'caller' ...
                        'QueryInterface' => function(...){...} 
                        'language' => 2
                        'languageName' => "JavaScript"
                        'filename' => "chrome://zotero/content/preferences/preferences.xul"
                        'name' => "oncommand"
                        'lineNumber' => 1
                        'sourceLine' ...
                        'caller' ...
    'inner' ...
    'data' ...
        'QueryInterface' => function(...){...} 
    'initialize' => function(...){...} 

Does this suggest where the problem lies? Note that so far as I can tell, the storage isn't null: ie the webdav server is working fine, and I have filled out the passwords correctly in the form.