For unknown reasons "Save All" doesn't save the vsprops files.
diff --git a/PCbuild9/pyd_d.vsprops b/PCbuild9/pyd_d.vsprops
index 6964c84..8fc10b9 100644
--- a/PCbuild9/pyd_d.vsprops
+++ b/PCbuild9/pyd_d.vsprops
@@ -9,7 +9,7 @@
 		Name="VCCLCompilerTool"
 		Optimization="0"
 		InlineFunctionExpansion="0"
-		PreprocessorDefinitions="_DEBUG;_USERDLL"
+		PreprocessorDefinitions="_DEBUG"
 		RuntimeLibrary="3"
 	/>
 	<Tool