Hi Robert, Method basic_binary_iprimitive::load_binary (version 1.11 that in CVS repository) contains two small typos. Please, consider basic_binary_iprimitive.hpp line 163: 163: if(count != static_cast<std::size_t>(s)) but it should be: 163: if(scount != static_cast<std::size_t>(s)) And the same typo in line 174: 174: if(count != 1) should be 174: if(scount != 1) instead. Slava.