Not able to load Images from pList

HI Guys,
I am porting my game on Windows 8 phone. Its already live on iOS and Android.
Its crash when I try to load images from a plist.

Unhandled exception at 0x69B76451 (libcocos2d.dll) in WickedChicks.exe: 0xC0000005: Access violation reading location 0x00000018.

My code is simple:

CCSpriteFrameCache::sharedSpriteFrameCache()->addSpriteFramesWithFile (“CommonObjects.plist”);

My CommonObjects.plist and its png are present in resource folder & is working fine on iOS and Android.

Its giving null for

@ CCDictionary *dict = CCDictionary::createWithContentsOfFileThreadSafe(fullPath.c_str());
@
in

void CCSpriteFrameCache::addSpriteFramesWithFile(const char *pszPlist)
method.

Thanks in Advance