[oe] unable to build any package using bitbake command

[prasad]

Hi,
i am trying to build bsp-5.0 for an picochip using openembedded
if i use any bitbake commands like 
#bitbake helloworld;bitbake nano;etc...
am getting the below error

ERROR: Error evaluating '${@oe.utils.ifelse(bool(d.getVar('MACHINE', True)),
'${MACHINE}', 'BASE_PACKAGE_ARCH')}'
Traceback (most recent call last):
  File "/home/svprasad/oe/bitbake/lib/bb/data_smart.py", line 117, in expandWithRefs
    s = __expand_python_regexp__.sub(varparse.python_sub, s)
  File "/home/svprasad/oe/bitbake/lib/bb/data_smart.py", line 69, in python_sub
    codeobj = compile(code.strip(), self.varname or "<expansion>", "eval")
  File "MACHINE_ARCH", line 1
    oe.utils.ifelse(bool(d.getVar('MACHINE', True)), '${MACHINE
                                                              ^
SyntaxError: EOL while scanning string literal

ERROR: Error parsing
/home/svprasad/oe/openembedded/recipes/squeezeclient/squeezeslave_svn.bb: EOL
while scanning string literal (MACHINE_ARCH, line 1)
ERROR: Command execution failed: Exited with 1

Even i Google,i got the issue but i did not get any proper solution.
can you help me what might be the wrong.


Thanks
prasad