Index: win/makefile.vc
===================================================================
diff -u -rb820ed696bdcb35268fe39d0ddcac58d045bb6ee -rc822857cfca60c8103827be417f5e3c7a9e99c6a
--- win/makefile.vc	(.../makefile.vc)	(revision b820ed696bdcb35268fe39d0ddcac58d045bb6ee)
+++ win/makefile.vc	(.../makefile.vc)	(revision c822857cfca60c8103827be417f5e3c7a9e99c6a)
@@ -540,6 +540,7 @@
 	@echo Installing binaries to '$(SCRIPT_INSTALL_DIR)'
 	@if not exist "$(SCRIPT_INSTALL_DIR)" mkdir "$(SCRIPT_INSTALL_DIR)"
 	@$(CPY) $(PRJLIB) "$(SCRIPT_INSTALL_DIR)" >NUL
+	@if not exist "$(INCLUDE_INSTALL_DIR)" mkdir "$(INCLUDE_INSTALL_DIR)"
 	@echo Installing header files to "$(INCLUDE_INSTALL_DIR)"
 	@$(CPY) "$(GENERICDIR)\nsf.h" "$(INCLUDE_INSTALL_DIR)"
 	@$(CPY) "$(GENERICDIR)\nsfInt.h" "$(INCLUDE_INSTALL_DIR)"