I had to port a multi-process application to 64 bits and I rely on boost serialization to send messages, that are maps of key-values, into Microsoft queues to the other modules. It works just fine into 32 bits but when I run it in 64 the constructor throws an &quot;invalid signature&quot; exception<br>
<br>void Message::fromBinary( const std::string&amp; data )<br>{<br>  std::stringstream ss;<br>  ss &lt;&lt; data;<br>  boost::archive::binary_iarchive ia(ss); //exception here<br><br>  ia &gt;&gt; *this;<br>}<br><br>I managed to debug into basic_binary_iarchive.ipp and this &#39;if&#39; @ line 72 fails<br>
<br>if(file_signature != BOOST_ARCHIVE_SIGNATURE())<br>  boost::serialization::throw_exception(archive_exception(archive_exception::invalid_signature));<br><br>inside this file I have no debug symbols so I don&#39;t know the values of &#39;file_signature&#39; and &#39;BOOST_ARCHIVE_SIGNATURE&#39; or where BOOST_ARCHIVE_SIGNATURE is defined.<br>
<br>Some additional information: the modules are all running on the same machine, on windows 7 64-bits, and  compiled by visual studio 2010 x64 including static boost libraries 1.45.<br><br>What causes this and how can I fix it?<br>