Cuffnorm crashes when used with --library-norm-method classic-fpkm

[ctrapnell]

A user sent this trace, for example:

cuffnorm -p 15 -o $cn_out/$gtf_nm --library-norm-method classic-fpkm --use-sample-sheet $gtf_file .cn_${gtf_nm}.list 2> $cn_out/$gtf_nm/my.log

*** glibc detected *** cuffnorm: free(): invalid next size (fast): 0x0000000000dab200 ***
======= Backtrace: =========
/lib64/libc.so.6[0x35f7a76166]
/lib64/libc.so.6[0x35f7a78ca3]
cuffnorm[0x4d79e1]
cuffnorm[0x417a3e]
cuffnorm[0x41abeb]
/lib64/libc.so.6(__libc_start_main+0xfd)[0x35f7a1ed1d]
cuffnorm[0x40fe19]
======= Memory map: ========
00400000-005c3000 r-xp 00000000 4f9:2c566 144129331671661695
/lustre/tools_centos6.3/build/cufflinks-2.2.1/install/bin/cuffnorm
007c3000-007c5000 rw-p 001c3000 4f9:2c566 144129331671661695
/lustre/tools_centos6.3/build/cufflinks-2.2.1/install/bin/cuffnorm
007c5000-007d2000 rw-p 00000000 00:00 0
00d5c000-00e22000 rw-p 00000000 00:00 0 [heap]
35f7600000-35f7620000 r-xp 00000000 fd:00 1183199 /lib64/ld-2.12.so
35f781f000-35f7820000 r--p 0001f000 fd:00 1183199 /lib64/ld-2.12.so
35f7820000-35f7821000 rw-p 00020000 fd:00 1183199 /lib64/ld-2.12.so

[ctrapnell]

I have not been able to reproduce this with the current master.