diff --git a/SharpPhysFS/PhysFS.cs b/SharpPhysFS/PhysFS.cs
index 4c88221..0cd8cb1 100644
--- a/SharpPhysFS/PhysFS.cs
+++ b/SharpPhysFS/PhysFS.cs
@@ -179,7 +179,7 @@ namespace SharpPhysFS
       {
         var strPtr = (IntPtr)Marshal.PtrToStructure(ptr, typeof(IntPtr));
         var str = Marshal.PtrToStringAnsi(strPtr);
-        if (System.IO.File.Exists(str)) { yield return str; } // the lib seems to be returning directories. boo!
+        if (!IsDirectory(str)) { yield return str; } // the lib seems to be returning directories. boo!
       }
       Interop.PHYSFS_freeList(files);
     }
diff --git a/SharpPhysFS/SharpPhysFS.csproj b/SharpPhysFS/SharpPhysFS.csproj
index 83efe1a..e3cc209 100644
--- a/SharpPhysFS/SharpPhysFS.csproj
+++ b/SharpPhysFS/SharpPhysFS.csproj
@@ -11,5 +11,5 @@
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
   </PropertyGroup>
 
-  <Import Project=".\build\copylibs.targets" />
+  <Import Project=".\targets\copylibs.targets" />
 </Project>
diff --git a/SharpPhysFS/app.config b/SharpPhysFS/app.config
new file mode 100644
index 0000000..ae2fcaa
--- /dev/null
+++ b/SharpPhysFS/app.config
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+  <dllmap dll="physfs" os="windows" target="physfs.dll" />
+	<dllmap dll="physfs" os="osx" target="libphysfs.dylib"/>
+	<dllmap dll="physfs" os="linux,freebsd,netbsd" target="libphysfs.so"/>
+	<dllmap dll="physfs" os="openbsd" target="libphysfs.so"/>
+</configuration>