PySpark fails to start in Windows

C:\XXXX>bin\pyspark.cmd
Running C:\XXXX\python.exe with PYTHONPATH=C:\XXXX\bin\..\python\lib\py4j-0.8.2.1-src.zip;C:\XXXX\bin\..\python;
Python 2.7.8 (default, Jun 30 2014, 16:03:49) [MSC v.1500 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
="x" was unexpected at this time.
Traceback (most recent call last):
  File "C:\XXXX\bin\..\python\pyspark\shell.py", line 45, in <module>
    sc = SparkContext(appName="PySparkShell", pyFiles=add_files)
  File "C:\XXXX\python\pyspark\context.py", line 103, in __init__
    SparkContext._ensure_initialized(self, gateway=gateway)
  File "C:\XXXX\python\pyspark\context.py", line 212, in _ensure_initialized
    SparkContext._gateway = gateway or launch_gateway()
  File "C:\XXXX\python\pyspark\java_gateway.py", line 71, in launch_gateway
    raise Exception(error_msg)
Exception: Launching GatewayServer failed with exit code 255!
Warning: Expected GatewayServer to output a port, but found no output.

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