How to fix such kind of error

I want to integrate imageTargets sample with Cloud recognition by using  tutorial that was given in FAQ of developer portal. But after ndk-build i am getting such kind of error. Am i  missing something? May be someone meet this kind of error   "Compile++ arm  : ImageTargets <= ImageTargets.cppjni/ImageTargets.cpp: In function 'int Java_com_qualcomm_QCARSamples_ImageTargets_ImageTargets_initTracker(JNIEnv*, jobject)':jni/ImageTargets.cpp:206:101: error: invalid static_cast from type 'QCAR::Tracker::TYPE' to type 'QCAR::ImageTracker*'jni/ImageTargets.cpp:207:9: error: 'tracker' was not declared in this scopejni/ImageTargets.cpp: In function 'void Java_com_qualcomm_QCARSamples_ImageTargets_ImageTargetsRenderer_renderFrame(JNIEnv*, jobject)':jni/ImageTargets.cpp:369:25: error: 'env' was not declared in this scopejni/ImageTargets.cpp:369:45: error: 'obj' was not declared in this scopejni/ImageTargets.cpp: In function 'void Java_com_qualcomm_QCARSamples_ImageTargets_ImageTargets_startCamera(JNIEnv*, jobject)':jni/ImageTargets.cpp:693:58: error: 'class QCAR::Tracker' has no member named 'getTargetFinder'jni/ImageTargets.cpp: In function 'void Java_com_qualcomm_QCARSamples_ImageTargets_ImageTargets_stopCamera(JNIEnv*, jobject)':jni/ImageTargets.cpp:712:54: error: 'class QCAR::Tracker' has no member named 'getTargetFinder'make: *** [obj/local/armeabi/objs/ImageTargets/ImageTargets.o] Error 1