This was cleared up by adding the header #include at the top of the file that was causing the problem. Not sure why this cropped up in 1.59 and not previous releases but at least we’re back in business. Dave

On Dec 8, 2015, at 9:18 AM, David Bernstein wrote:

Hi Everyone, This is my first post here, hopefully I’m at the right place but if not please let me know where I should go.

I have a C++ class which uses boost::property_tree and also includes . This has been working nicely until I upgraded to V1.59 today and now I’m getting the compile error below.

Any help with this would be greatly appreciated!

Thanks, Dave

/usr/local/include/boost/property_tree/ptree_serialization.hpp:66:24: error: no type named 'library_version_type' in namespace 'boost::archive' const bsa::library_version_type library_version( ~~~~~^ /usr/local/include/boost/property_tree/ptree_serialization.hpp:69:21: error: no member named 'library_version_type' in namespace 'boost::archive' if(bsa::library_version_type(3) < library_version){

I

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