Thought I'd post this in case it helps any fellow-Thetans who find themselves in the same predicament. I had to go into hospital for a week & my EEN had frozen on my iMac when I got back (I leave it open all the time to earn TFuel). Restarted computer & re-opened EEN. No go. "Fetching Wallet" for over 96 hours. I resolved to leave further & after over 100 hours lo & behold the wallet was "fetched" & all is now good again. Boring post, I know, but if it helps someone to stay patient & leave it be then that is the purpose.