Hi, I am trying to migrate my project to 1.35. The following used to compile and work with 1.34.1: bmx::multi_index_container<wstring, bmx::indexed_by<bmx::ordered_unique<bmx::identity<wstring> >, bmx::random_access<> >, boost::fast_pool_allocator<wstring> > But refuses to compile with 1.35 (I use Intel compiler 10.1 with MSVC7.1 STL). Something to do with allocator rebind. I am including some of the compiler output below. Can someone please suggest a resolution (hopefully keeping the pool allocator intact)? Thanks Amit C:\DevLibraries\Boost\include\boost-1_35_0\boost/pool/pool_alloc.hpp(130): error: reference to void is not allowed typedef value_type & reference; ^ detected during: instantiation of class "boost::fast_pool_allocator<T, UserAllocator, Mutex, NextSize> [with T=void, UserAllocator=boost::default_user_allocator_new_delete, Mutex=boost::details::pool::default_mutex, NextSize=32U]" at line 149 of "C:\Boost\include\boost-1_35_0\boost/detail/allocator_utilities.hpp" instantiation of class "boost::detail::allocator::rebinder<Allocator>::result<Type> [with Allocator=boost::fast_pool_allocator<void, boost::default_user_allocator_new_delete, boost::details::pool::default_mutex, 32U>, Type=boost::multi_index::detail::random_access_index_node_impl< boost::fast_pool_allocator<void, boost::default_user_allocator_new_delete, boost::details::pool::default_mutex, 32U>>]" at line 158 of "C:\Boost\include\boost-1_35_0\boost/detail/allocator_utilities.hpp" instantiation of class "boost::detail::allocator::compliant_allocator_rebind_to<Allocator, Type> [with Allocator=boost::fast_pool_allocator<void, boost::default_user_allocator_new_delete, boost::details::pool::default_mutex, 32U>, Type=boost::multi_index::detail::random_access_index_node_impl< boost::fast_pool_allocator<void, boost::default_user_allocator_new_delete, boost::details::pool::default_mutex, 32U>>]" at line 62 of "C:\Boost\include\boost-1_35_0\boost/mpl/eval_if.hpp" instantiation of class "boost::mpl::eval_if_c<C, F1, F2> [with C=false, F1=boost::detail::allocator::partial_std_allocator_rebind_to< boost::fast_pool_allocator<void, boost::default_user_allocator_new_delete, boost::details::pool::default_mutex, 32U>, boost::multi_index::detail::random_access_index_node_impl< boost::fast_pool_allocator<void, boost::default_user_allocator_new_delete, boost::details::pool::default_mutex, 32U>>>,