diff --git a/.idea/runConfigurations/winPackagerTest__debug_logging_.xml b/.idea/runConfigurations/winPackagerTest__debug_logging_.xml
index f929ef4bf3b..18875c1d738 100644
--- a/.idea/runConfigurations/winPackagerTest__debug_logging_.xml
+++ b/.idea/runConfigurations/winPackagerTest__debug_logging_.xml
@@ -2,7 +2,7 @@
   <configuration default="false" name="winPackagerTest (debug logging)" type="NodeJSConfigurationType" factoryName="Node.js" path-to-node="project" path-to-js-file="node_modules/.bin/ava" application-parameters="test/out/winPackagerTest.js" node-parameters="--harmony_rest_parameters --harmony_default_parameters --harmony_array_includes" working-dir="$PROJECT_DIR$">
     <envs>
       <env name="NODE_PATH" value="." />
-      <env name="DEBUG" value="electron-windows-installer:main" />
+      <env name="DEBUG" value="electron-windows-installer:*" />
     </envs>
     <method />
   </configuration>
diff --git a/package.json b/package.json
index 5f61158dc8d..88027e908dc 100644
--- a/package.json
+++ b/package.json
@@ -55,7 +55,7 @@
     "bluebird": "^3.3.4",
     "command-line-args": "^2.1.6",
     "electron-packager": "^6.0.0",
-    "electron-winstaller-fixed": "^2.0.6-beta.5",
+    "electron-winstaller-fixed": "^2.0.6-beta.6",
     "fs-extra": "^0.26.7",
     "fs-extra-p": "^0.2.0",
     "globby": "^4.0.0",
diff --git a/src/util.ts b/src/util.ts
index 3e5ef679e5e..86bec49a3a9 100644
--- a/src/util.ts
+++ b/src/util.ts
@@ -76,13 +76,13 @@ export function exec(file: string, args?: string[], options?: ExecOptions): Blue
       }
       else {
         if (stdout.length !== 0) {
-          console.error(stdout.toString())
+          console.log(stdout.toString())
         }
-        if (stderr.length !== 0) {
-          reject(new Error(stderr.toString() + "\n" + error.toString()))
+        if (stderr.length === 0) {
+          reject(error)
         }
         else {
-          reject(error)
+          reject(new Error(stderr.toString() + "\n" + error.toString()))
         }
       }
     })
diff --git a/src/winPackager.ts b/src/winPackager.ts
index d674f1649c0..c95ab2cccd0 100644
--- a/src/winPackager.ts
+++ b/src/winPackager.ts
@@ -215,6 +215,6 @@ function parseIco(buffer: Buffer): Array<Size> {
   return result
 }
 
-function isIco(buffer: Buffer) {
+function isIco(buffer: Buffer): boolean {
   return buffer.readUInt16LE(0) === 0 && buffer.readUInt16LE(2) === 1
 }
\ No newline at end of file