rcfsutil fails on my fs5.rcfs image

[Supermathie]

I get the following output when attempting to extract one particular file from fs5.rcfs (taken from my Z10):

michael:~/Documents/Z10-assets/data$ ../rcfsutil/rcfs -l fs5.rcfs 
file: 0x00002000 0x41ff00000000 0x00003000 0x00002020 0x00000040 Tue Feb 19 02:10:17 2013 0x00000000 0x00000000 
file: 0x00002020 0x41e84a510000 0x00003001 0x00002060 0x00000020 Tue Feb 19 02:09:28 2013 0x00000069 0x0000006a config
file: 0x00002040 0x41e86b2c0000 0x00003008 0x00002080 0x00000080 Tue Feb 19 02:09:28 2013 0x00000069 0x0000006a dll
file: 0x00002060 0x81a0edde0000 0x0000300c 0x00000000 0x00000000 Tue Feb 19 02:09:28 2013 0x00000069 0x00000069 usagemeter.conf
file: 0x00002080 0xaf81a03fc90000 0x0000301c 0x00004000 0x0000df41 Tue Feb 19 02:09:28 2013 0x00000069 0x00000069 usagemeterbridge.so
file: 0x000020a0 0xb081a0f6e10000 0x00003030 0x0000a93c 0x000067f4 Tue Feb 19 02:09:28 2013 0x00000069 0x00000069 billingservice.so
file: 0x000020c0 0xae81a0a9e40000 0x00003042 0x0000db38 0x0002de62 Tue Feb 19 02:09:28 2013 0x00000069 0x00000069 usagemeter.so
file: 0x000020e0 0xa481a04dc10000 0x00003050 0x00022dbc 0x000026b0 Tue Feb 19 02:09:28 2013 0x00000069 0x00000069 ATT-WISPr.so
michael:~/Documents/Z10-assets/data$ ../rcfsutil/rcfs -e fs5.rcfs usagemeter.conf
Failed to decompress file
successfully extracted usagemeter.conf
*** glibc detected *** ../rcfsutil/rcfs: free(): invalid next size (fast): 0x00000000008133d0 ***
======= Backtrace: =========
/lib/x86_64-linux-gnu/libc.so.6(+0x7eb96)[0x7ffa77515b96]
../rcfsutil/rcfs[0x401bb7]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xed)[0x7ffa774b876d]
../rcfsutil/rcfs[0x400a09]
======= Memory map: ========
00400000-00403000 r-xp 00000000 00:1e 7151737                            /home/michael/Documents/Z10-assets/rcfsutil/rcfs
00602000-00603000 r--p 00002000 00:1e 7151737                            /home/michael/Documents/Z10-assets/rcfsutil/rcfs
00603000-00604000 rw-p 00003000 00:1e 7151737                            /home/michael/Documents/Z10-assets/rcfsutil/rcfs
00813000-00834000 rw-p 00000000 00:00 0                                  [heap]
7ffa77281000-7ffa77296000 r-xp 00000000 fc:01 8271                       /lib/x86_64-linux-gnu/libgcc_s.so.1
7ffa77296000-7ffa77495000 ---p 00015000 fc:01 8271                       /lib/x86_64-linux-gnu/libgcc_s.so.1
7ffa77495000-7ffa77496000 r--p 00014000 fc:01 8271                       /lib/x86_64-linux-gnu/libgcc_s.so.1
7ffa77496000-7ffa77497000 rw-p 00015000 fc:01 8271                       /lib/x86_64-linux-gnu/libgcc_s.so.1
7ffa77497000-7ffa7764c000 r-xp 00000000 fc:01 9720                       /lib/x86_64-linux-gnu/libc-2.15.so
7ffa7764c000-7ffa7784b000 ---p 001b5000 fc:01 9720                       /lib/x86_64-linux-gnu/libc-2.15.so
7ffa7784b000-7ffa7784f000 r--p 001b4000 fc:01 9720                       /lib/x86_64-linux-gnu/libc-2.15.so
7ffa7784f000-7ffa77851000 rw-p 001b8000 fc:01 9720                       /lib/x86_64-linux-gnu/libc-2.15.so
7ffa77851000-7ffa77856000 rw-p 00000000 00:00 0 
7ffa77856000-7ffa77878000 r-xp 00000000 fc:01 9734                       /lib/x86_64-linux-gnu/ld-2.15.so
7ffa77a49000-7ffa77a4c000 rw-p 00000000 00:00 0 
7ffa77a73000-7ffa77a78000 rw-p 00000000 00:00 0 
7ffa77a78000-7ffa77a79000 r--p 00022000 fc:01 9734                       /lib/x86_64-linux-gnu/ld-2.15.so
7ffa77a79000-7ffa77a7b000 rw-p 00023000 fc:01 9734                       /lib/x86_64-linux-gnu/ld-2.15.so
7fff71394000-7fff713b5000 rw-p 00000000 00:00 0                          [stack]
7fff713ff000-7fff71400000 r-xp 00000000 00:00 0                          [vdso]
ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0                  [vsyscall]
Aborted (core dumped)

I can send you the rcfs image for testing