Currently HXCPP application crashes on Windows XP due to usage of functions that are not present in Window XP. Both app and libraries (std/zlib/etc) are built with -DHXCPP_WINXP_COMPAT flag.
Identified at least two of them: inet_pton and iten_ntop in winsocks2.h / WS2_32.dll.
Additionally dll files that are bundled in Haxelib release is clearly broken for WinXP (false for FileSystem.exists(Sys.getCwd()) is clearly something out of nightmares.)