i was happy until update - evrthng's gone.
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New Tab Tools couldn't start properly. Try these:

If cookies are disabled, add an exception for moz-extension://69e87d6a-111b-4829-8dbe-061d87733b5c/.
Go to about:config and check dom.indexedDB.enabled is set to true.

You will need to restart New Tab Tools (or just restart Firefox) for these changes to have an effect.
New Tab Tools cannot start if Firefox is set to "never remember history" or "always open in private browsing mode".
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app doesn't start. says: look up about.config, set "true" etc... i did, but still doesn't work. have no idea... very disappointed.