Hi there,
and thanks for making this.

I'm currently trying to set up bitcoin-abe for Netcoin (https://github.com/netcoinproject/netcoin) and I'm having a bit of problems.
I'm running the latest from github and have added the following to Datastore.py:

  {"chain":"Netcoin",
     "code3":"NET", "address_version":"\x70", "magic":"\xfd\xb6\xa5\xdb"}

...
....
block_tx 4071 3398
Skipped 1 bytes at block end
Exception at 7099887448213790924

Failed to catch up {'blkfile_offset': 39107, 'blkfile_number': 1, 'chain_id': 9, 'loader': None, 'dirname': '/home/myuser/.netcoin', 'id': Decimal('32')}
Traceback (most recent call last):
  File "Abe/DataStore.py", line 2637, in catch_up
    store.catch_up_dir(dircfg)
  File "Abe/DataStore.py", line 2901, in catch_up_dir
    store.import_blkdat(dircfg, ds, blkfile['name'])
  File "Abe/DataStore.py", line 3028, in import_blkdat
    b = store.parse_block(ds, chain_id, magic, length)
  File "Abe/DataStore.py", line 3059, in parse_block
    d['transactions'].append(deserialize.parse_Transaction(ds))
  File "Abe/deserialize.py", line 92, in parse_Transaction
    d['txOut'].append(parse_TxOut(vds))
  File "Abe/deserialize.py", line 67, in parse_TxOut
    d['value'] = vds.read_int64()
  File "Abe/BCDataStream.py", line 72, in read_int64
    def read_int64  (self): return self._read_num('  File "Abe/BCDataStream.py", line 110, in _read_num
    (i,) = struct.unpack_from(format, self.input, self.read_cursor)
error: unpack_from requires a buffer of at least 8 bytes

Any ideas on what I'm doing wrong ?