segfault in initialization

I'm updating the FreeBSD port to 3.0. I have been able to build it successfully, after applying several patches (attached).
However, the library fails to initialize . Any test is aborted, and even the simple zorba -q '1 + 1' does.

This is a backtrace of running exactly "zorba -q '1 + 1'":

Zorba Internal Fatal Error in /usr/home/cerutti/FreeBSD/ports/textproc/zorba/work/zorba-3.0/src/store/naive/qname_pool.cpp:357:
"!found": condition failed
[New Thread 807406400 (LWP 101053/zorba)]

Program received signal SIGABRT, Aborted.
[Switching to Thread 807406400 (LWP 101053/zorba)]
0x00000008063442aa in thr_kill () from /lib/libc.so.7
(gdb) bt
#0 0x00000008063442aa in thr_kill () from /lib/libc.so.7
#1 0x000000080640bfd9 in abort () from /lib/libc.so.7
#2 0x000000080224f6cd in zorba::fatal (condition=0x8025dbca7 "!found", file=0x8025dba48 "/usr/home/cerutti/FreeBSD/ports/textproc/zorba/work/zorba-3.0/src/store/naive/qname_pool.cpp", l
ine=357, msg=0x7fffffff59a9 "") at /usr/home/cerutti/FreeBSD/ports/textproc/zorba/work/zorba-3.0/src/zorbautils/fatal.cpp:40
#3 0x000000080241a7da in zorba::simplestore::QNamePool::insert (this=0x8074aa080, res=@0x7fffffffa5d0, ns=0x802547098 "http://www.w3.org/2001/XMLSchema", pre=0x8024e37dc "xs", ln=0x8025
4d4c0 "string") at /usr/home/cerutti/FreeBSD/ports/textproc/zorba/work/zorba-3.0/src/store/naive/qname_pool.cpp:357
#4 0x000000080245d889 in zorba::simplestore::BasicItemFactory::createQName (this=0x80747b970, result=@0x7fffffffa5d0, ns=0x802547098 "http://www.w3.org/2001/XMLSchema", pre=0x8024e37dc
"xs", ln=0x80254d4c0 "string") at /usr/home/cerutti/FreeBSD/ports/textproc/zorba/work/zorba-3.0/src/store/naive/simple_item_factory.cpp:96
#5 0x000000080213eec6 in RootTypeManager (this=0x807703000) at /usr/home/cerutti/FreeBSD/ports/textproc/zorba/work/zorba-3.0/src/types/root_typemanager.cpp:237
#6 0x00000008018e99dd in zorba::GlobalEnvironment::init (store=0x802caec70) at /usr/home/cerutti/FreeBSD/ports/textproc/zorba/work/zorba-3.0/src/system/globalenv.cpp:101
#7 0x0000000801323d5d in zorba::ZorbaImpl::init (this=0x802ca8810, store=0x802caec70) at /usr/home/cerutti/FreeBSD/ports/textproc/zorba/work/zorba-3.0/src/api/zorbaimpl.cpp:104
#8 0x0000000801323ac3 in zorba::Zorba::getInstance (store=0x802caec70) at /usr/home/cerutti/FreeBSD/ports/textproc/zorba/work/zorba-3.0/src/api/zorba.cpp:32
#9 0x0000000000412170 in main (argc=3, argv=0x7fffffffd470) at /usr/home/cerutti/FreeBSD/ports/textproc/zorba/work/zorba-3.0/bin/zorbacmd.cpp:1028

Any help in determining the cause of this is much appreciated!

[1] All patches can be found here: http://people.freebsd.org/~gahr/zorba-3.0-patches/