EXC_BAD_ACCESS at CCActionManager::update(ccTime dt) ??

Does anybody encounter this crash when I add some sprite into the layer, it return EXC_BAD_ACCESS at this line:

m_pCurrentTarget~~>currentAction = m_pCurrentTarget~~>actions~~>arr[m_pCurrentTarget~~>actionIndex];

and I can find the “currentAction” is 0x0.

Is it a bug ?? Or just my fault to produce this ??

Thank you.

could you paste the code that could reproduce the issue?