I'm trying to build a project that works in Visual Studio 2013, but I'm using it with VS 2015 Preview. I get the following Unresolved Externals: __iob_func use in hbcplr.lib, hbpp.lib, hbvm.lib, rddcdx.lib, fiveH32.lib, and hbssl.lib _printf used in rddcdx.lib and hbpp.lib _ vacopy used in hbcommon....