Segmentation fault while doing scan

[root@localhost jeffchan-blockchain-parser]# ./blockchain.out ~/.bitcoin/blocks/
Successfully opened block-chain input file '/root/.bitcoin/blocks//blk00000.dat'
Welcome to the BlockChain command parser.  Written by John W. Ratcliff on January 4, 2014 : TipJar: 1BT66EoaGySkbY9J6MugvQRhMMXDwPxPya
Registered DataDirectory: /root/.bitcoin/blocks/ to scan for the blockchain.

Commands Available:

max_blocks            : Specifies the maximum number of blocks to read.
scan                  : Toggles scanning the blockchain headers pressing a key will pause or abort the scan.
process               : Toggle processing all blocks; warning uses a lot of memory!..
statistics            : Enables gathering detailed address/transaction statistics on the block chain

stop_scan             : Stop's the scan of the blockchain headers and just builds the blockchain from where we are at so far.
block <number>        : Will print the contents of this block.
counts                : Report block and transaction counts.
by_day                : Reports statistics by day.
by_month              : Reports statistics by month.
by_year               : Reports statistics by year.
top_balance <n>       : Will output the addresses with the highest balance up to <n>
min_balance <n>       : Specifies the minimum balance to use when generating a report. Default is 1BTC
oldest <n>            : Outputs the <n> oldest addresses higher than min_balance
adr <n>               : Outputs the transaction history relative to a specific bitcoinaddres.
zombie <days>         : Report statitics about zombie coins; contents of addresses not used since this many days.
record_addresses      : Toggles whether or not to record addresses when computing statistics.
load_record           : Debugging feature, tries to load previously recorded addresses.
help                  : Repeat these commands.
exit, quit, or bye    : Will exit this tool

scan

Scanning block-chain re-started from block 0 up to a maximum of 500000 blocks..
Successfully opened block-chain input file '/root/.bitcoin/blocks//blk00001.dat'
Scanned 119,973 block headers so far, 119,973 since last time.

Successfully opened block-chain input file '/root/.bitcoin/blocks//blk00511.dat'
Scanned 410,601 block headers so far, 200 since last time.
Successfully opened block-chain input file '/root/.bitcoin/blocks//blk00512.dat'
Scanned 410,828 block headers so far, 227 since last time.
Segmentation fault