C++ :: Compiler Says There Is No Constructor But It Does Have One

Code:
activity = new Idle(this, NULL);
class Idle : public Activity {
private:
float mTimeInIdle;
public:
Idle() : mTimeInIdle(0) { }
Idle(Objects *actor, Goods *target) : Activity(actor, target)
{
}

Error 1 error C2514: 'Idle' : class has no constructors d:jackydocumentsvisual studio 2010projectsperfectsimperfectsimperfectsimObjectsObjects.h 43 1 PerfectSim

The activity = new Idle(this, NULL) line is located inside the Objects::Objects(...) constructor.

Would it be caused by some cyclic dependencies? How do I go about resolving it?