Problem with LUABIND_NO_ERROR_CHECKING

hi,

first of all: thanks for luabind 0.9, automatic smart pointer downcasts alone are brilliant, very much appreciated!

Unfortunately, activating LUABIND_NO_ERROR_CHECKING doesn't work for me anymore and crashes the application. I had this buried in the release build, which I hadn't tried since luabind 0.8, and narrowed it down to the testcase you can find below. The test uses luabind 0.9 release from sourceforge (dated Jan 5th 2010), lua 5.1.4, boost 1.40, all statically linked, compiled using gcc 4.0 on Mac OS 10.5.
The same happened in on 10.6 with gcc 4.2, 32 or 64 bit build didn't matter. 

Output of the testcase in XCode console:

run
[Switching to process 9641 local thread 0x2e03]
Running…
found settings
Program received signal:  “EXC_BAD_ACCESS”.
(gdb) bt
#0  0x919eb401 in std::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string ()
#1  0x000029aa in Settings::Settings (this=0xbffff86c) at /Users/tony/Desktop/lbtest/main.cpp:12
#2  0x00002d95 in luabind::detail::value_converter::apply<Settings> (this=0xbffff7f0) at policy.hpp:287
#3  0x00002e20 in luabind::detail::object_cast_aux<Settings, luabind::adl::object, luabind::detail::null_type, luabind::detail::throw_error_policy<Settings>, Settings> (value_wrapper=@0xbffff870) at object.hpp:973
#4  0x00002e9b in luabind::object_cast<Settings, luabind::adl::object> (value_wrapper=@0xbffff870) at object.hpp:1024
#5  0x00001bf8 in main (argc=1, argv=0xbffff8c0) at /Users/tony/Desktop/lbtest/main.cpp:49

The prefix.pch file contains exactly one line:

#define LUABIND_NO_ERROR_CHECKING

Commenting this out makes it run flawlessly.
Hope you can help,
best,
Tony

(testcase attached as main.cpp)

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