DSP network sanity check failed (saturator from Christoph Hart)

[13murderer]

Help...
was working, opened project after short time and this happened.
template struct saturator
{
SNEX_NODE(saturator);

static const int NUM_CHANNELS = 2;

// SNEX has a special float object that handles automatic smoothing
// they are stateful, so we need two of them for stereo operations
span<sfloat, NUM_CHANNELS> k;

float getSample(float input, float ck)
{
	return (1.0f + ck) * input / (1.0f + ck * Math.abs(input));
}


template <typename T> void process(T& data)
{
	const int numChannels = Math.min(data.getNumChannels(), NUM_CHANNELS);
	
	for(int i = 0; i < numChannels; i++)
	{
		for(auto& s: data[i])
		{
			s = getSample(s, k[i].advance());
		}
	}
	

}
template <typename T> void processFrame(T& data)
{
	int i = 0;

	for(auto& s: data)
		s = getSample(s, k[i++].advance());
}
void reset()
{
	// this resets the smoothing and will be called when there
	// needs to be a reininitialisation in the signal stream
	for(auto& ck: k)
		ck.reset();
}

void prepare(PrepareSpecs ps)
{
	// change 1000 to 50 for a normal smoothing
	// I set it to 1s fade time so you can clearly hear it in action
	const double SMOOTHING_TIME = 1000.0;
	
	for(auto& ck: k)
		ck.prepare(ps.sampleRate, SMOOTHING_TIME);
}

void setExternalData(const ExternalData& d, int index)
{
}

template <int P> void setParameter(double v)
{
	if(P == 0)
	{
		const auto s = Math.min((float)v, 0.999f);					
		const auto nk = 2.0f * s / (1.0f - s);
		
		for(auto& ck: k)
			ck.set(nk);
	}
}

};
compiling in snex code window but shape doesnt change in real time, just after compiling