It worked the first time, then stopped working, there is a failure code: 0x80040111 (NS_ERROR_NOT_AVAILABLE)

Posted a query in
https://support.mozilla.com/fr/quest...#answer-164861

But not yet found an answer. Does anyone understand what's wrong ? Thanks

Here is the log :

1301819501298 Service.Main INFO Starting sync at 2011-04-03 10:31:41
1301819501299 Service.Main INFO In sync().
1301819501299 Service.Main DEBUG Clearing sync triggers.
1301819501537 Net.Resource DEBUG GET success 200 https://phx-sync236.services.mozilla...fo/collections
1301819501537 Service.Main DEBUG Fetching global metadata record
1301819501537 Service.Main DEBUG Weave Version: 1.7b1pre Local Storage: 5 Remote Storage: 5
1301819501537 Service.Main INFO Sync key is up-to-date: no need to upgrade.
1301819501538 Service.Main DEBUG Fetching and verifying -- or generating -- symmetric keys.
1301819501538 Service.Main INFO Testing info/collections: {"clients":1301823091.1,"crypto":1293093075.38,"keys":1291356430.21,"meta":1301823031.76,"bookmarks":1301688477.97,"passwords":1301823097.92,"forms":1301823030.82,"history":1301823031.09,"prefs":1301823031.28,"tabs":1301823031.47}
1301819501538 CollectionKeys INFO Testing for updateNeeded. Last modified: 1293093075.38
1301819501538 Engine.Clients INFO 0 outgoing items pre-reconciliation
1301819501539 Engine.Clients INFO Records: 0 applied, 0 failed to apply, 0 reconciled.
1301819501539 Service.Main INFO Updating enabled engines: 8 clients.
1301819501540 Engine.Bookmarks DEBUG First sync, uploading all items
1301819501788 Service.Main DEBUG bookmarks failed: Component returned failure code: 0x80040111 (NS_ERROR_NOT_AVAILABLE) [nsINavHistoryQueryResultNode.childCount] Stack trace: BStore_getChildren()@resource://services-sync/engines/bookmarks.js:1431 < BStore_getChildren()@resource://services-sync/engines/bookmarks.js:1434 < BStore_getAllIDs()@resource://services-sync/engines/bookmarks.js:1458 < SyncEngine__syncStartup()@resource://services-sync/engines.js:568 < _syncStart()@resource://services-sync/engines/bookmarks.js:266 < SyncEngine__sync()@resource://services-sync/engines.js:964 < wrappedSync()@resource://services-sync/util.js:193 < batchedSync()@resource://services-sync/util.js:199 < WrappedNotify()@resource://services-sync/util.js:172 < Engine_sync()@resource://services-sync/engines.js:377 < WeaveSvc__syncEngine()@resource://services-sync/service.js:1913 < resource://services-sync/service.js:1793 < WrappedNotify()@resource://services-sync/util.js:172 < WrappedLock()@resource://services-sync/util.js:140 < _lockedSync()@resource://services-sync/service.js:1695 < resource://services-sync/service.js:1686 < WrappedCatch()@resource://services-sync/util.js:114 < sync()@resource://services-sync/service.js:1667 < browser.js:5317
1301819501788 Engine.Passwords INFO 0 outgoing items pre-reconciliation
1301819501788 Engine.Passwords INFO Records: 0 applied, 0 failed to apply, 0 reconciled.
1301819501836 Service.Main CONFIG Starting backoff, next sync at:Sun Apr 03 2011 13:14:08 GMT+0200 (CEST)
1301819501837 Service.Main DEBUG Exception: Some engines did not sync correctly No traceback available
1301819517470 Service.Main INFO Logging out
1301819517470 Service.Main DEBUG Clearing sync triggers.
1301819517475 Service.Main INFO Service reset.
1301819517476 Engine.Clients DEBUG Resetting clients last sync time
1301819517477 Engine.Bookmarks DEBUG Resetting bookmarks last sync time
1301819517478 Engine.Forms DEBUG Resetting forms last sync time
1301819517478 Engine.History DEBUG Resetting history last sync time
1301819517479 Engine.Passwords DEBUG Resetting passwords last sync time
1301819517479 Engine.Prefs DEBUG Resetting prefs last sync time
1301819517480 Engine.Tabs DEBUG Resetting tabs last sync time
1301819517480 CollectionKeys INFO Clearing CollectionKeys...
1301819535537 Service.Main DEBUG Clearing sync triggers.