to fixup Abe with an existing mysql db of blocks up to 680K
edit Abe/Datastore.py to change the magic num
then in mysql:
mysql> update magic set magic=0xface6969 where magic_id='1';
Query OK, 0 rows affected (0.00 sec)
Rows matched: 1 Changed: 0 Warnings: 0
mysql> select magic_id,hex(magic),magic_name from magic;
+----------+------------+----------------+
| magic_id | hex(magic) | magic_name |
+----------+------------+----------------+
| 1 | FACE6969 | Sexcoin magic |
| 2 | F9BEB4D9 | Bitcoin magic |
| 3 | FABFB5DA | Testnet magic |
| 4 | F9BEB4FE | Namecoin magic |
+----------+------------+----------------+
4 rows in set (0.00 sec)