Hi all.  I'm the operator of btcback.com.  I just upgraded bitcoind/electrum and have been getting tons of errors along these lines:

ERROR:Abe.DataStore:Chain not found for magic number '\xfb\x89\xa4\x03' in block file /home/bitcoind/.bitcoin/blk0001.dat at offset 1612760166.  If file contents have changed, consider forcing a rescan: UPDATE datadir SET blkfile_number=1, blkfile_offset=0 WHERE dirname='/home/bitcoind/.bitcoin'

I shutdown electrum, ran the SQL query it suggests and restarted it.  Now I can't connect to the server and the logs are empty except for: 'Starting Electrum server on btcback.com'.  I'm assuming it takes just takes a long time to re-scan the blockchain.


Before I started that, I was also getting a different error about a missing column in the db:
OperationalError: (1054, "Unknown column 'last_value' in 'field list'")
error: sql error: 1MUbXxCYa3W2Q6YMrrQcNQDz8kaGftwXkq
Traceback (most recent call last):
  File "/home/bitcoind/src/electrum/server/backends/abe/__init__.py", line 87, in safe_sql
    ret = self.selectall(sql,params)
  File "/usr/local/lib/python2.6/dist-packages/Abe/DataStore.py", line 510, in _selectall
    store.sql(stmt, params)
  File "/usr/local/lib/python2.6/dist-packages/Abe/DataStore.py", line 412, in sql
    store.cursor.execute(cached, params)
  File "/usr/lib/pymodules/python2.6/MySQLdb/cursors.py", line 166, in execute
    self.errorhandler(self, exc, value)
  File "/usr/lib/pymodules/python2.6/MySQLdb/connections.py", line 35, in defaulterrorhandler
    raise errorclass, errorvalue

Any thoughts on that one?