diff --git a/modules/angular2/src/transform/reflection_remover/codegen.dart b/modules/angular2/src/transform/reflection_remover/codegen.dart
index 3b25234802..00d53060e5 100644
--- a/modules/angular2/src/transform/reflection_remover/codegen.dart
+++ b/modules/angular2/src/transform/reflection_remover/codegen.dart
@@ -17,7 +17,7 @@ class Codegen {
       {String prefix})
       : this.prefix = prefix == null ? _PREFIX_BASE : prefix,
         importUris = newEntryPointPaths.map((p) =>
-            path.relative(p, from: path.dirname(reflectionEntryPointPath))) {
+            path.relative(p, from: path.dirname(reflectionEntryPointPath)).replaceAll('\\', '/')) {
     if (this.prefix.isEmpty) throw new ArgumentError.value('(empty)', 'prefix');
   }
 
diff --git a/tools/build/dartanalyzer.js b/tools/build/dartanalyzer.js
index 64dff52b72..edd51f7023 100644
--- a/tools/build/dartanalyzer.js
+++ b/tools/build/dartanalyzer.js
@@ -24,7 +24,7 @@ module.exports = function(gulp, plugins, config) {
       libFiles.concat(testFiles).concat(webFiles).forEach(function(fileName, index) {
         if (fileName !== tempFile && fileName.indexOf("/packages/") === -1) {
           if (fileName.indexOf('lib') == 0) {
-            fileName = 'package:' + packageName + '/' + path.relative('lib', fileName);
+            fileName = 'package:' + packageName + '/' + path.relative('lib', fileName).replace(/\\/g, '/');
           }
           analyzeFile.push('import "' + fileName + '" as mod' + index + ';');
         }
@@ -54,6 +54,10 @@ module.exports = function(gulp, plugins, config) {
       var errorCount = 0;
       var warningCount = 0;
       rl.on('line', function(line) {
+        if (line == "find: >     bin [: No such file or directory") {
+          //Skip bad output from Dart SDK .bat files on Windows
+          return;
+        }
         var parsedLine = _AnalyzerOutputLine.parse(line);
         if (!parsedLine) {
           errorCount++;
diff --git a/tools/build/pubbuild.js b/tools/build/pubbuild.js
index 1b80bd28ae..985878d1f9 100644
--- a/tools/build/pubbuild.js
+++ b/tools/build/pubbuild.js
@@ -48,7 +48,7 @@ function replaceDartWithJsScripts(gulp, folder) {
 function removeWebFolder(gulp, folder) {
   var folders = [].slice.call(glob.sync(path.join(folder, 'web', '*')));
   folders.forEach(function(subFolder) {
-    fs.renameSync(subFolder, subFolder.replace(path.sep + 'web' + path.sep, path.sep));
+    fs.renameSync(subFolder, subFolder.replace('/web/', '/'));
   });
   fs.rmdirSync(path.join(folder, 'web'));
   return Q.resolve();