Hi all, I am trying to compile some code in Release mode in MSVC 2010, see below error message, I am looking for a workaround or solution, and so far all I can find is something to do with boost::multi_array https://svn.boost.org/trac/boost/ticket/4874 but the solution and patch seems to be targeted at only multi_array. Has anyone else tackled this before? thanks, Paul 34>c:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\xutility(275): error C2582: 'operator =' function is unavailable in 'boost::function_output_iterator<UnaryFunction>' 34> with 34> [ 34> UnaryFunction=utils::output_counter 34> ] 34> c:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\xutility(2176) : see reference to function template instantiation '_Iter &std::_Rechecked<_OutIt,_OutIt>(_Iter &,_UIter)' being compiled 34> with 34> [ 34> _Iter=boost::function_output_iterator<utils::output_counter>, 34> _OutIt=boost::function_output_iterator<utils::output_counter>, 34> _UIter=boost::function_output_iterator<utils::output_counter> 34> ] 34> c:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include\algorithm(4681) : see reference to function template instantiation '_OutIt std::copy<_InIt1,_OutIt>(_InIt,_InIt,_OutIt)' being compiled 34> with 34> [ 34> _OutIt=boost::function_output_iterator<utils::output_counter>, 34> _InIt1=int *, 34> _InIt=int * 34> ]