diff --git a/Tools/nib2cib/Converter.j b/Tools/nib2cib/Converter.j
index bd38f1886..549a32bdf 100644
--- a/Tools/nib2cib/Converter.j
+++ b/Tools/nib2cib/Converter.j
@@ -109,7 +109,8 @@ ConverterConversionException = @"ConverterConversionException";
 
 - (CPData)CPCompliantNibDataAtFilePath:(CPString)aFilePath
 {
-    var temporaryNibFilePath = "";
+    var temporaryNibFilePath = "",
+        temporaryPlistFilePath = "";
 
     try
     {
@@ -127,14 +128,16 @@ ConverterConversionException = @"ConverterConversionException";
         }
 
         // Convert from binary plist to XML plist
-        var p = OS.popen(["/usr/bin/plutil", "-convert", "xml1", temporaryNibFilePath, "-o", "-"]),
-            plistContents;
+        var temporaryPlistFilePath = FILE.join("/tmp", FILE.basename(aFilePath) + ".tmp.plist");
 
-        if (p.wait() === 0)
-            plistContents = p.stdout.read()
-        else
+        if (OS.popen(["/usr/bin/plutil", "-convert", "xml1", temporaryNibFilePath, "-o", temporaryPlistFilePath]).wait() === 1)
             [CPException raise:ConverterConversionException reason:@"Could not convert to xml plist for file: " + aFilePath];
 
+        if (!FILE.isReadable(temporaryPlistFilePath))
+            [CPException raise:ConverterConversionException reason:@"Unable to convert nib file."];
+
+        var plistContents = FILE.read(temporaryPlistFilePath, { charset: "UTF-8" });
+
         // Minor NS keyed archive to CP keyed archive conversion.
         // Use Java directly because rhino's string.replace is *so slow*. 4 seconds vs. 1 millisecond.
         // plistContents = plistContents.replace(/\<key\>\s*CF\$UID\s*\<\/key\>/g, "<key>CP$UID</key>");
@@ -153,6 +156,9 @@ ConverterConversionException = @"ConverterConversionException";
     {
         if (temporaryNibFilePath !== "" && FILE.isWritable(temporaryNibFilePath))
             FILE.remove(temporaryNibFilePath);
+
+        if (temporaryPlistFilePath !== "" && FILE.isWritable(temporaryPlistFilePath))
+            FILE.remove(temporaryPlistFilePath);
     }
 
     return [CPData dataWithRawString:plistContents];