[Boost-users] Filesystem...

hi,
I've a problem with a simple program.

the source is like this:

int main(int argc, char **argv)
{
 
 
  std::string s("./");
  boost::filesystem::path p(s, WifiSolution::check_name);

etc...

this program works fine on linux and freebsd. when I try to execute it 
on windows xp it throws an
exception during the creation of the object p, more specific in the 
function m_path_append.

the complete stack is

     msvcr80.dll!operator new(unsigned int size=3435973868)  Line 63 + 
0x1e bytes    C++
     msvcp80.dll!std::_Allocate(unsigned int _Count=3435973868, 
char * __formal=0x00000000)  Line 44 + 0x6 bytes    C++
     
msvcp80.dll!std::basic_string,std::allocator 
 >::_Copy(unsigned int _Newsize=3435973867, unsigned int _Oldlen=31)  
Line 1986 + 0xd bytes    C++
     
msvcp80.dll!std::basic_string,std::allocator 
 >::_Grow(unsigned int _Newsize=3435973867, bool _Trim=false)  Line 2012 
+ 0xb bytes    C++
     
msvcp80.dll!std::basic_string,std::allocator 
 >::append(const 
std::basic_string,std::allocator > & 
_Right={...}, unsigned int _Roff=0, unsigned int _Count=3435973836)  
Line 931 + 0x16 bytes    C++
     
msvcp80.dll!std::operator+,std::allocator 
 >(const 
std::basic_string,std::allocator > & 
_Left="invalid name "ÌÌÌÌ." in path: "", const 
std::basic_string,std::allocator > & 
_Right="ÌÌÌÌ./")  Line 25 + 0x21 bytes    C++
     Backup++.exe!boost::filesystem::path::m_path_append()  + 0xddc 
bytes    C++
     Backup++.exe!boost::filesystem::path::path()  + 0x4b bytes    C++
     Backup++.exe!main(int argc=1, char * * argv=0x003a5c40)  Line 22 + 
0xf bytes    C++

as you can see I'm using Microsoft Visual Studio .NET 2005 (vc-8.0)

Any idea?
Bye
Alex