Compile error, VS 2017 Boost 1.69 property_tree equal_range

[BobNagy]

I am using VS 2017 15.9.5, Boost 1.69.0.

Code that compiles and works correctly using VS 2015 now causes a compile error with VS 2017.
Unable to find resolution or workaround.

The error is this :

boost\property_tree\detail\ptree_implementation.hpp(500): error C2440: '': cannot convert from '_Ty1' to 'boost::property_tree::basic_ptree<std::wstring,std::wstring,std::less>::assoc_iterator'
with
[
_Ty1=boost::multi_index::detail::bidir_node_iterator<boost::multi_index::detail::ordered_index_node<boost::multi_index::detail::null_augment_policy,boost::multi_index::detail::index_node_base<std::pair<const std::wstring,boost::property_tree::basic_ptree<std::wstring,std::wstring,std::lessstd::wstring>>,std::allocator<std::pair<const std::wstring,boost::property_tree::basic_ptree<std::wstring,std::wstring,std::lessstd::wstring>>>>>>
]
and
[
Key=std::wstring
]
boost\property_tree\detail\ptree_implementation.hpp(500): note: No constructor could take the source type, or constructor overload resolution was ambiguous (compiling source file BPropertyTree.cpp)

[BobNagy]

Also, this error only happens if the call to equal_range is inside a lambda.
If the call is inside a member function, there is no error.