Hi.. My project builds and works fine in Debug mode in VS2008... but, when I am trying to build it in Release mode.. I am getting unresolved 123 external symbol errors. here is a list of some Creating library ..\\Core\\Bin\\GGEHavokDemos_Release.lib and object ..\\Core\\Bin\\GGEHavokDemos_Release.exp 1>LINK : warning LNK4098: defaultlib 'LIBCMT' conflicts with use of other libs; use /NODEFAULTLIB:library 1>HavokWrapper.obj : error LNK2001: unresolved external symbol "class hkClass const hkcdStaticTreeTreehkcdStaticTreeDynamicStorage6Class" (?hkcdStaticTreeTreehkcdStaticTreeDynamicStorage6Class@@3VhkClass@@B) 1>HavokWrapper.obj : error LNK2001: unresolved external symbol "class hkClass const hkcdStaticTreeTreehkcdStaticTreeDynamicStorage5Class" (?hkcdStaticTreeTreehkcdStaticTreeDynamicStorage5Class@@3VhkClass@@B) 1>HavokWrapper.obj : error LNK2001: unresolved external symbol "class hkClass const hkcdStaticTreeTreehkcdStaticTreeDynamicStorage4Class" (?hkcdStaticTreeTreehkcdStaticTreeDynamicStorage4Class@@3VhkClass@@B) 1>HavokWrapper.obj : error LNK2001: unresolved external symbol "class hkClass const hkcdStaticTreeTreehkcdStaticTreeDynamicStorage32Class" (?hkcdStaticTreeTreehkcdStaticTreeDynamicStorage32Class@@3VhkClass@@B) 1>HavokWrapper.obj : error LNK2001: unresolved external symbol "class hkClass const hkcdStaticTreeDynamicStoragehkcdStaticTreeCodecRawClass" (?hkcdStaticTreeDynamicStoragehkcdStaticTreeCodecRawClass@@3VhkClass@@B) 1>HavokWrapper.obj : error LNK2001: unresolved external symbol "class hkClass const hkcdStaticTreeDynamicStoragehkcdStaticTreeCodec3Axis6Class" (?hkcdStaticTreeDynamicStoragehkcdStaticTreeCodec3Axis6Class@@3VhkClass@@B) 1>HavokWrapper.obj : error LNK2001: unresolved external symbol "class hkClass const hkcdStaticTreeDynamicStoragehkcdStaticTreeCodec3Axis5Class" (?hkcdStaticTreeDynamicStoragehkcdStaticTreeCodec3Axis5Class@@3VhkClass@@B) 1>HavokWrapper.obj : error LNK2001: unresolved external symbol "class hkClass const hkcdStaticTreeDynamicStoragehkcdStaticTreeCodec3Axis4Class" (?hkcdStaticTreeDynamicStoragehkcdStaticTreeCodec3Axis4Class@@3VhkClass@@B) 1>HavokWrapper.obj : error LNK2001: unresolved external symbol "class hkClass const hkcdStaticTreeDynamicStorage6Class" (?hkcdStaticTreeDynamicStorage6Class@@3VhkClass@@B) 1>HavokWrapper.obj : error LNK2001: unresolved external symbol "class hkClass const hkcdStaticTreeDynamicStorage5Class" (?hkcdStaticTreeDynamicStorage5Class@@3VhkClass@@B) etc., How to clear this.. ?? Thanks in advance.. Regards, kiran