diff --git a/binaries/data/config/default.cfg b/binaries/data/config/default.cfg
index 12fc1ae515..41270b927c 100644
--- a/binaries/data/config/default.cfg
+++ b/binaries/data/config/default.cfg
@@ -27,7 +27,7 @@ fancywater = true
 ;   vertexshader  Use vertex shaders for transform and lighting where possible
 ; Using 'fixed' instead of 'default' may work around some graphics-related problems,
 ; but will reduce performance when a modern graphics card is available.
-renderpath = vertexshader
+renderpath = default
 
 ; Adjusts how OpenGL calculates mipmap level of detail. 0.0f is the default (blurry) value.
 ; Lower values sharpen/extend, and higher values blur/decrease. Clamped at -3.0 to 3.0.
diff --git a/binaries/data/tools/atlas/scripts/section/object.js b/binaries/data/tools/atlas/scripts/section/object.js
index f237ffca82..6a451b85cb 100644
--- a/binaries/data/tools/atlas/scripts/section/object.js
+++ b/binaries/data/tools/atlas/scripts/section/object.js
@@ -276,6 +276,7 @@ function init(window, bottomWindow)
 	}
 
 	function updateVariationControl() {
+		variationControl.freeze();
 		variationControl.sizer.clear(true);
 		var settings = Atlas.State.objectSettings;
 		var variation = settings.getActorVariation();
@@ -286,6 +287,9 @@ function init(window, bottomWindow)
 			choice.stringSelection = variation[i];
 			variationControl.sizer.add(choice, 0, wxStretch.EXPAND);
 		}
+		// TODO: this sizer stuff is a bit dodgy - it often doesn't quite
+		// update the sizes and scrollbars at the right points
+		variationControl.thaw();
 		variationControlBox.layout();
 		variationControl.sizer.layout();
 		bottomWindow.sizer.layout();
diff --git a/source/collada/CommonConvert.cpp b/source/collada/CommonConvert.cpp
index a7eec747fa..94e365c354 100644
--- a/source/collada/CommonConvert.cpp
+++ b/source/collada/CommonConvert.cpp
@@ -102,7 +102,11 @@ void FColladaDocument::LoadFromText(const char *text)
 
 	if (newText != text)
 	{
-		xmlFree((void*)newText);
+		// It'd be nice to use xmlFree, but for some reason (?) it causes
+		// linker errors in MSVC. So get access to it an ugly way:
+		xmlFreeFunc freeFunc;
+		xmlMemGet(&freeFunc, NULL, NULL, NULL);
+		freeFunc((void*)newText);
 	}
 
 	REQUIRE_SUCCESS(status);
diff --git a/source/tools/atlas/AtlasScript/ScriptInterface.cpp b/source/tools/atlas/AtlasScript/ScriptInterface.cpp
index a55452b24d..bfeabd72b4 100644
--- a/source/tools/atlas/AtlasScript/ScriptInterface.cpp
+++ b/source/tools/atlas/AtlasScript/ScriptInterface.cpp
@@ -48,7 +48,9 @@
 #include <boost/preprocessor/punctuation/comma_if.hpp>
 #include <boost/preprocessor/repetition/repeat.hpp>
 
-#include <valgrind/valgrind.h>
+#ifndef _WIN32
+# include <valgrind/valgrind.h>
+#endif
 
 #define FAIL(msg) do { JS_ReportError(cx, msg); return false; } while (false)
 
@@ -511,7 +513,10 @@ namespace
 			wxLogWarning(_T("%s"), logMessage.c_str());
 		else
 			wxLogError(_T("%s"), logMessage.c_str());
+#ifndef _WIN32
+		// When running under Valgrind, print more information in the error message
 		VALGRIND_PRINTF_BACKTRACE("->");
+#endif
 		wxPrintf(_T("wxJS %s: %s\n--------\n"), isWarning ? _T("warning") : _T("error"), logMessage.c_str());
 	}
 
@@ -654,18 +659,18 @@ JSContext* ScriptInterface::GetContext()
 
 bool ScriptInterface::AddRoot(void* ptr)
 {
-	return JS_AddRoot(m->m_cx, ptr);
+	return JS_AddRoot(m->m_cx, ptr) ? true : false;
 }
 
 bool ScriptInterface::RemoveRoot(void* ptr)
 {
-	return JS_RemoveRoot(m->m_cx, ptr);
+	return JS_RemoveRoot(m->m_cx, ptr) ? true : false;
 }
 
 ScriptInterface::LocalRootScope::LocalRootScope(ScriptInterface& scriptInterface)
 	: m_ScriptInterface(scriptInterface)
 {
-	m_OK = JS_EnterLocalRootScope(m_ScriptInterface.m->m_cx);
+	m_OK = JS_EnterLocalRootScope(m_ScriptInterface.m->m_cx) ? true : false;
 }
 
 ScriptInterface::LocalRootScope::~LocalRootScope()
@@ -688,7 +693,7 @@ bool ScriptInterface::SetValue_(const wxString& name, jsval val)
 	jsval argv[argc] = { jsName, val };
 	jsval rval;
 	JSBool ok = JS_CallFunctionName(m->m_cx, m->m_glob, "setValue", argc, argv, &rval);
-	return ok;
+	return ok ? true : false;
 }
 
 bool ScriptInterface::GetValue_(const wxString& name, jsval& ret)
@@ -697,7 +702,8 @@ bool ScriptInterface::GetValue_(const wxString& name, jsval& ret)
 
 	const uintN argc = 1;
 	jsval argv[argc] = { jsName };
-	return JS_CallFunctionName(m->m_cx, m->m_glob, "getValue", argc, argv, &ret);
+	JSBool ok = JS_CallFunctionName(m->m_cx, m->m_glob, "getValue", argc, argv, &ret);
+	return ok ? true : false;
 }
 
 bool ScriptInterface::CallFunction(jsval val, const char* name)
@@ -718,21 +724,22 @@ bool ScriptInterface::CallFunction_(jsval val, const char* name, std::vector<jsv
 	wxCHECK(JS_HasProperty(m->m_cx, JSVAL_TO_OBJECT(val), name, &found), false);
 	if (! found)
 		return false;
-	return JS_CallFunctionName(m->m_cx, JSVAL_TO_OBJECT(val), name, argc, argv, &ret);
+	JSBool ok = JS_CallFunctionName(m->m_cx, JSVAL_TO_OBJECT(val), name, argc, argv, &ret);
+	return ok ? true : false;
 }
 
 bool ScriptInterface::Eval(const wxString& script)
 {
 	jsval rval;
 	JSBool ok = JS_EvaluateScript(m->m_cx, m->m_glob, script.mb_str(), script.length(), NULL, 0, &rval);
-	return ok;
+	return ok ? true : false;
 }
 
 bool ScriptInterface::Eval_(const wxString& script, jsval& rval)
 {
 	JSBool ok = JS_EvaluateScript(m->m_cx, m->m_glob,
 		script.mb_str(), script.length(), NULL, 0, &rval);
-	return ok;
+	return ok ? true : false;
 }
 
 void ScriptInterface::LoadScript(const wxString& filename, const wxString& code)
diff --git a/source/tools/atlas/AtlasScript/ScriptInterface.h b/source/tools/atlas/AtlasScript/ScriptInterface.h
index 4ccdef4ad4..ebc34d1ac4 100644
--- a/source/tools/atlas/AtlasScript/ScriptInterface.h
+++ b/source/tools/atlas/AtlasScript/ScriptInterface.h
@@ -94,6 +94,8 @@ public:
 		bool OK();
 		// Leaves the local root scope
 		~LocalRootScope();
+	private:
+		LocalRootScope& operator=(const LocalRootScope&);
 	};
 	#define LOCAL_ROOT_SCOPE LocalRootScope scope(*this); if (! scope.OK()) return false