Hi there, taking the latest GIL source from their site is exposing a tedious compiler bug with VC2003. I have been trying to find an easy wokaround but failed. It fails in channel.hpp when trying to define specializations for channel_min_value() and channel_max_value. Here is the code: template <typename T> typename channel_traits<T>::value_type inline channel_min_value() { return std::numeric_limits<typename channel_traits<T>::value_type>::min(); } template <typename T> typename channel_traits<T>::value_type inline channel_max_value() { return std::numeric_limits<typename channel_traits<T>::value_type>::max(); } template<> inline bits8 channel_min_value<bits8>() { return 0; } template<> inline bits8 channel_max_value<bits8>() { return 255; } template<> inline bits16 channel_min_value<bits16>() { return 0; } template<> inline bits16 channel_max_value<bits16>() { return 32768; } template<> inline bits32f channel_min_value<bits32f>() { return 0.0f; } template<> inline bits32f channel_max_value<bits32f>() { return 1.0f; } Here is the compiler error messages: c:\gil\gil\core\channel.hpp(95) : error C2785: 'channel_traits<T>::value_type gil::channel_min_value(void)' and 'gil::bits8 gil::channel_min_value(void)' have different return types c:\gil\gil\core\channel.hpp(90) : see declaration of 'gil::channel_min_value' c:\gil\gil\core\channel.hpp(95) : see declaration of 'gil::channel_min_value' c:\gil\gil\core\channel.hpp(95) : error C2912: explicit specialization; 'gil::bits8 gil::channel_min_value<gil::bits8>(void)' is not a specialization of a function template c:\gil\gil\core\channel.hpp(95) : fatal error C1903: unable to recover from previous error(s); stopping compilation I have been trying to find a workaround reading some news groups entry. But all I could find are conformations that this is a bug and that VC2005 is compiling. Not very helpful. Does anyone here at boost know a workaround? I have realized that this request is offtopic. Please, ignore when feeling that my request is inappropriate. Thanks, Christian